esp guidance booklet for all ships-lr

8/9/2019 Esp Guidance Booklet for All Ships-lr

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ESP GUIDANCE BOOKLET_R13.0 2014

ENHANCED SURVEY PROGRAMME (ESP)

GUIDANCE BOOKLET

FOR ALL SHIP TYPES

IN PREPARATION FOR SPECIAL SURVEY

Revision 13.0


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Lloyd’s Register and variants of it are trading names of Lloyd’s Register Group Limited, its

subsidiaries and affiliates. Lloyd’s Register Group Limited (Reg. no.08126909) is a limited

company registered in England and Wales. Registered office: 71 Fenchurch Street, London,

EC3M 4BS, UK. A member of the Lloyd’s Register group.

Lloyd’s Register Group Limited , its affiliates and subsidiaries and their respective officers,

employees or agents are, individually and collectively, referred to in this clause as the ‘Lloyd’sRegister Group’. The Lloyd’s Register Group assumes no responsibility and shall not be liableto any person for any loss, damage or expense caused by reliance on the information or advicein this document or howsoever provided, unless that person has signed a contract with therelevant Lloyd’s Register Group entity for the provision of this information or advice and in thatcase any responsibility or liability is exclusively on the terms and conditions set out in thatcontract.


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Reference Documents

Rules and Regulations for the Classification of Ships, Part 1, Chapter 3

- Section 1, General - 1 5 Definitions

- Section 5, Special Survey – General – Hull requirements.

- Section 6, Special Survey – Bulk Carriers - Hull requirements.

- Section 7, Special Survey – Oil Carriers (including ore/oil ships and

ore/bulk/oil ships) - Hull requirements.

- Section 8, Special Survey – Chemical Tankers - Hull requirements.

Thickness Measurement and Close Up Survey Guidance v7.0

I.M.O Resolution A.1049(27)

I.A.C.S Unified Requirement Z7 and Z10.1, 10.2, 10.3, 10.4

Harmonised CSR for Bulk Carriers and Tankers External Release 1 Jul 2012


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Contents

1.0 Introduction

2.0 Preparation for Survey - General Guidance

2.1 Preparation for Survey – Additional Guidance for Bulk Carriers

2.2 Preparation for Survey – Additional Guidance for Oil Tankers Chemical Tankers

2.3 Preparation for Survey – Additional Guidance for Ore/Bulk/Oil Ships

3.0 Tank Testing Requirements

4.0 Special Survey Requirements – Bulk Carriers

5.0 Special Survey Requirem ents – oil tankers

6.0 Special Survey Requirements – chemical tankers

7.0 Special Survey Requirem ents – ore/oil ore/bulk/oil ships

8.0 Table of Maximu m Permissible Diminution of Individual Plates and Stiffeners of

non-CSR Ships

9.0 Com mon Structural Rules (CSR) Thickness Measurement Acceptance Criteria

10.0 CSR and non CSR Ships Global Strength Criteria - Renewal Thickness for Global

Corrosion

11.0 Guidelines for technical assessmen t to determ ine locations for close up survey

and thickness measurements during ESP planning


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1.0 Introduction

This document has been produced in compliance with I.M.O Resolution A.1049(27), I.A.C.S Unified

Requirement Z10.1, Z10.2, Z10.3, Z10.4, Harmonised CSR 2012 and the Rules and Regulations for the

Classification of Ships, Part 1, Chapter 3.

As a result of the introduction of the Enhanced Survey Programme, oil tankers, combination carriers,

chemical tankers and dry bulk cargo ships (bulk carriers), require a Survey Planning Questionnaire and a

Survey Programme (planning document) to be prepared in advance of the Special Survey & the

Intermediate Survey on ships over 10 years of age.

In particular, the Rules and Regulations for the Classification of Ships require a Survey Planning

Questionnaire and a Survey Programme to be prepared by the Owner at least six months in advance of

the intermediate or special survey and submitted for agreement. The Programme is to include proposals

for the Special Survey, including the means of providing access for close-up survey and thickness

measurement. The Survey Programme at Intermediate Survey may consist of the Survey Programme

agreed for the previous Special Survey supplemented by the Executive Summary of that Special Survey

and later relevant Survey Reports. The Survey will not commence until a Survey Programme has been

agreed. Owners are advised that they may submit a Survey Programme for Intermediate Survey subject to

their survey & docking planning, for approval.

The attached guidelines are intended to assist Owners in their preparation for survey and to provide

guidance on the information required in the Survey Planning Questionnaire and Special Survey

Programme document.

Special surveys may be commenced at the fourth Annual Survey after completion, commissioning, or

previous Special Survey, and be progressed during the succeeding year with a view to completion by the

due date of the Special Survey. As part of the preparation for the Special Survey, the thickness

measurement, where applicable, should be dealt with, so far as practicable, in connection with the fourth

Annual Survey. However, thickness measurements should not be carried out before the fourth annual

Survey.

When Special Surveys are commenced prior to the fourth Annual Survey, the entire survey is to be

completed within 15 months if such work is to be credited towards the Special Survey.

Ships that are required to be surveyed in accordance with ESP requirements are identified by the notation

ESP. Where the Special Survey is completed more than three months before the due date, the new record

of Special Survey will be the final date of survey. In all other cases the date recorded will be the fifth

anniversary.

LR will give timely notice to an Owner about forthcoming surveys by means of a letter or a computer

printout of a ship’s Quarterly Listing of Surveys, Condition of Class and Memoranda. The omission of

such notice, however, does not absolve the Owner from his responsibility to comply with LR’s survey

requirements for maintenance of class, all of which are available to Owners on the ClassDirect Live

website.


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2.0 Preparation for Survey - General G uidance

1. In order to enable the attending Surveyor(s) to carry out the survey, provisions for proper and safeaccess are to be agreed between the Owner and LR. Tanks and spaces are to be safe for access, begas free and properly ventilated. Prior to entering a tank, void or enclosed space, it is to be verifiedthat the atmosphere in that space is free from hazardous gas and contains sufficient oxygen.

2. In preparation for survey, thickness measurements and to allow for a thorough examination, all spacesare to be cleaned including removal from surfaces of all loose accumulated corrosion scale. Spaces areto be sufficiently clean and free from water, scale, dirt, oil residues etc. to reveal corrosion,deformation, fractures, damages or other structural deterioration as well as the condition of theprotective coating. However, those areas of structure whose renewal has already been decided by the

owner need only be cleaned and de-scaled to the extent necessary to determine the limits of renewedareas.

3. It should be noted that the Survey Programme is applicable to all spaces or areas within the cargohold or cargo tank length and all salt-water ballast spaces outside the cargo hold/tank length. Theremaining items and spaces for survey and/or tests are to be dealt with in the normal manner.

4. Sufficient illumination is to be provided to reveal corrosion, deformation, fractures, damages or otherstructural deterioration.

5. Means are to be provided to enable the Surveyor to examine the structure in a safe and practical way.Where the provisions of safety and required access are determined by the Surveyor not to beadequate, then the survey of the space(s) involved is not to proceed.

6. For surveys, including close-up survey where applicable, in cargo spaces and ballast tanks, one ormore of the following means of access, is to be provided:

(a) . Permanent staging and passages through structures.

(b) . Temporary staging and passages through structures.

(c) . Hydraulic arm vehicles such as conventional cherry pickers, lifts and movable platforms.

(d). Portable ladders, see Note.

(e) . Boats or rafts.

(f) . Other equivalent means.

Note: Portable ladders may be used, at the discretion of the Surveyor, for survey of the hull structure

of single skin bulk carriers, except for the close-up survey of cargo hold shell frames, see 6 and 7.


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7. Survey at sea or anchorage may be undertaken when the Surveyor is fully satisfied with thenecessary assistance from the personnel onboard and provided the following conditions andlimitations are met:a) Surveys of tanks by means of boats or rafts is at the sole discretion of the attending Surveyor,

who is to take into account the safety arrangements provided, including weather forecasting and

ship response in reasonable sea conditions. Appropriate life jackets are to be available for allparticipants. The boats or rafts are to have satisfactory residual buoyancy and stability even if onechamber is ruptured. A safety checklist is also to be provided. An oxygen-meter, breathingapparatus, lifeline and whistles are to be at hand during the survey. For oil tankers and chemicaltankers an explosimeter is also to be provided.

b) A communication system is to be arranged between the survey party in the tank and theresponsible officer on deck. This system must include the personnel in charge of ballast pumphandling if boats or rafts are to be used.

c) Surveys of tanks by means of boats or rafts will only be permitted for the under deck areas oftanks when the coating of the under deck structure is in GOOD condition and there is noevidence of wastage. The only exception to this, at the discretion of the Surveyor, is where thedepth of under deck web plating is 1.5 m or less. Alternatively, rafting may be used if apermanent means of access is provided in each bay to allow safe entry and exit. This means ofaccess is to be direct from deck via a vertical ladder and a small platform fitted approximately 2m below deck. Where these conditions are not met, then the under deck area will require to bestaged for survey.

8. Where surveys are to be held at sea then special arrangements and precautions will require to betaken. Any proposals for these surveys should include precise details of the survey preparation andinclude details of safety precautions. Where it is proposed to use rafts as a means of access for surveythen it is recommended that the survey be held with the ship anchored or in calm and shelteredwaters. If requested, in certain circumstances a survey at sea may be permitted.

9. On ships of 20,000 tonnes deadweight and above, and where the notation ESP is assigned startingwith Special Survey III, all Special and Intermediate Surveys are to be carried out by at least twoexclusive Surveyors attending on board to jointly perform the Survey. On single side skin bulk carriers

of 100,000 tonnes deadweight and above the Intermediate Survey between 10 and 15 years of ageis also to be carried out by at least two exclusive Surveyors attending onboard to jointly perform thesurvey. Though each attending Surveyor is not required to perform all aspects of the required survey,the attending Surveyors are required to consult with each other and to do joint examinations to theextent necessary for them to agree on actions required to complete the survey (i.e. with respect tooverall surveys, close-up surveys, renewals, repairs, and conditions of class).

10. Adequate time should be allowed, to ensure that the overall survey, close-up survey and thicknessmeasurement of tanks and holds can be carried out satisfactorily. It is recommended that the orderof survey be discussed in detail with the attending Surveyor to ensure that surveys are carried outexpediently.

11. Thickness measurements are normally to be taken by means of ultrasonic test equipment and are to

be carried out by a firm qualified in accordance with Lloyd's Register Approval for ThicknessMeasurement of Hull Structures. Thickness measurements are to be witnessed by the Surveyor. TheSurveyor is to be on board, to the extent necessary to control the process. Guidance regard thicknessmeasurement and Close-up survey requirements can be found in the LR Group publication“Thickness Measurement and Close-up Survey Booklet”.

12. For those ships assigned the ESP notation prior to commencement of any part of the Intermediate orSpecial Survey, a survey planning meeting is to be held between the attending Surveyor(s), theOwner’s representative in attendance, the thickness measurement company representative and theMaster of the ship or an appropriately qualified representative appointed by the Master or Owner,with recommendation of the participation of the repairer in order that the Special Survey Programme& repairs be sufficiently discussed by ascertaining that all arrangements envisaged in the SurveyProgramme are in place and the safe and efficient conduct of the Survey & thickness measurements

is to be carried out. Experience has shown that failure to discuss and agree a programme of surveyand repairs has led to the Owner suffering delays and consequent financial penalty.


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8. A brief summary of any noteworthy points from the records of any inspection carried out by Ownersrepresentatives should be forwarded with the Survey Programme. The full details are to be madeavailable to the Surveyor during surveys, together with records of the cargo/ballast history andcondition of any protective coatings.

9. For close-up surveys of the cargo hold shell frames of single skin bulk carriers with a deadweight equalto or greater than 100,000 tonnes the use of portable ladders is not accepted and one or more of the

following means of access, is to be provided:(a) At Annual Surveys, Intermediate Surveys held before the ship is 10 years old and Special Survey

I:-

(i) Permanent staging and passages through structures.

(ii) Temporary staging and passages through structures.

(iii) Hydraulic arm vehicles such as conventional cherry pickers, lifts and movable platforms.

(iv) Boats or rafts, provided the structural capacity of the hold is sufficient to withstand static

loads at all levels of water.

(v) Other equivalent means.

(b) At Special Survey II and all subsequent Intermediate Surveys and Special Surveys:-

(i) Either permanent or temporary staging and passage through structures for close-up

survey of at least the upper part of hold frames.

(ii) Hydraulic arm vehicles such as conventional cherry pickers for surveys of lower and

middle part of shell frames as alternative to staging.

(iii) Lifts and movable platforms.

(iv) Boats or rafts, provided the structural capacity of the hold is sufficient to withstand staticloads at all levels of water.

(v) Other equivalent means.

(c) Notwithstanding the above requirements, for single skin bulk carriers greater than 10 years old,

at Annual Survey the use of a portable ladder fitted with a mechanical device to secure the upper

end of the ladder is acceptable for the close-up survey of cargo hold shell frames.


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2.2 Preparation for Survey – Add itional Guidance for Oil

Tankers Chem ical Tankers

1. A specific Survey Programme must be worked out in advance of the Special Survey by the Owner inco-operation with their local LR Group office surveyors and submitted for consideration in a writtenformat.

2. In developing the Survey Programme, the following documentation should be collected and consultedwith a view to selecting tanks, holds, areas, and structural elements to be examined:- Survey status and basic ship Information

- On-board documentation

- Main structural plans (scantling drawings); including information regarding use of high tensile

steels (HTS),

- Relevant previous survey and inspection reports from both LR and the Owner,

- Information regarding the use of the ship's holds and tanks, typical cargoes and other relevant

data,

- Information regarding corrosion protection level on the new-building,

- Information regarding the relevant maintenance level during operation.

3. This submitted Survey Programme will be reviewed/agreed and returned to Owners / Managers. Theagreed Survey Programme with the covering letter, and this document, are to be retained on boardfor the use of attending Surveyors.

4. Your attention is drawn to the following safety procedures, which have been issued to LR GroupSurveyors.

(a) Attention is drawn to the danger which can be present in enclosed spaces such as tanks,

storerooms, etc. The danger exists whether these spaces have been empty for a long period or

regularly used for the carriage of liquids and certain other cargoes. Such spaces should never be

entered until they have been ventilated thoroughly and checked with a tested meter through as

many openings as possible for the presence of explosive, poisonous or suffocating gases.

(b) A communication system should be arranged between the survey party in the tank and the

responsible person on deck. This system should also include the personnel in charge of ballast

pump handling if boats/rafts are being used. Explosimeter, oxygen meter, breathing apparatus,

lifelines and whistles should be at hand when boats/rafts are used, appropriate life jackets should

be available for all participants.

(c) When confirmed gas free the space should be entered by a responsible person carrying the gas

meter who should make regular checks during the survey. The Surveyor should never enter the

space ahead of the meter carrier and certainly never on his own. Additional persons with rescue

equipment should be in attendance at the hatch entrance. Surveyors are reminded that the

disturbance of any sediment or residue in tanks may release dangerous gases.

(d) When spaces which may be expected to contain explosive gases are to be examined, all thosetaking part in the survey are to make sure that no metal objects which may become dislodged

are being carried loose in pockets, etc. The wearing of rubber boots and the use of flameproof

torches is imperative.


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(e) The person carrying the gas meter should remain in close contact with the Surveyor to prevent

him from moving into small, undetected pockets of gas which might hang in semi-enclosed

corners.

(f) In cases of tankers having an inert gas system, the most stringent precautions are to be taken toensure that adequate gas freeing has been completed. Inert gas is colourless, odourless andhighly toxic.

(g) The extent of the examination of a space is governed by the degree of cleanliness, the movement

of the ship and the safety measures. Surveys of tanks by means of boats/rafts should only be

undertaken at the discretion of the Surveyor, who should take into account the safety

arrangements provided, including weather forecasting and ship's response in reasonable sea

conditions.

(h) When examining water ballast or fresh water tanks, it is advisable that a responsible person is in

attendance at the pumps in the engine room to eliminate the possibility of the tanks being

flooded by mistake.

(j) The degree of danger caused by the combination of the above factors can only be judged by the

Surveyor on the spot. Consequently he alone can decide how much of the survey can be carried

out safely.


6. Owners are reminded that following the amendment of I.M.O Resolution A.1049(27), from 01 July2002 the evaluation of longitudinal strength is required to be carried out for oil tankers of length

130m and upwards after the ship reaches 10 years of age.

7. For those ships assigned the ESP notation prior to commencement of any part of the Intermediate orSpecial Survey, a survey planning meeting is to be held between the attending Surveyor(s), theOwner’s representative in attendance, the thickness measurement company representative and theMaster of the ship or an appropriately qualified representative appointed by the Master or Owner,with recommendation of the participation of the repairer in order that the Special SurveyProgramme & repairs be sufficiently discussed by ascertaining that all arrangements envisaged in theSurvey Programme are in place and the safe and efficient conduct of the Survey & thicknessmeasurements is to be carried out. Experience has shown that failure to discuss and agree aprogramme of survey and repairs has led to the Owner suffering delays and consequent financialpenalty.


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2.3 Preparation for Survey – Add itional Guidance

for Ore/Bulk/Oil Ships

1. A specific Survey Programme must be worked out in advance of the Special Survey by the Owner inco-operation with their local LR Group office surveyors and submitted for consideration in a writtenformat.

2. In developing the Survey Programme, the following documentation should be collected and consultedwith a view to selecting tanks, holds, areas, and structural elements to be examined:- Survey status and basic ship Information

- On-board documentation

- Main structural plans (scantling drawings); including information regarding use of high tensile

steels (HTS),

- Relevant previous survey and inspection reports from both LR and the Owner,

- Information regarding the use of the ship's holds and tanks, typical cargoes and other relevant

data,

- Information regarding corrosion protection level on the new-building,

- Information regarding the relevant maintenance level during operation.

3. This submitted Survey Programme will be reviewed/agreed and returned to Owners / Managers. Theagreed Survey Programme with the covering letter, and this document, are to be retained on boardfor the use of attending Surveyors. Alternatively, the information required to be provided in the SurveyProgramme could be recorded in Appendix 2 with this being forwarded for agreement. (An exampleof a suitably completed Appendix 2 is contained at the end of this document).

4. Your attention is drawn to the following safety procedures, which have been issued to LR Group

Surveyors.

(a) Attention is drawn to the danger which can be present in enclosed spaces such as tanks, store

rooms, etc. The danger exists whether these spaces have been empty for a long period or

regularly used for the carriage of liquids and certain other cargoes. Such spaces should never be

entered until they have been ventilated thoroughly and checked with a tested meter through as

many openings as possible for the presence of explosive, poisonous or suffocating gases.

(b) A communication system should be arranged between the survey party in the tank and the

responsible person on deck. This system should also include the personnel in charge of ballast

pump handling if boats/rafts are being used. Explosimeter, oxygen meter, breathing apparatus,

life-lines and whistles should be at hand when boats/rafts are used, appropriate life-jackets

should be available for all participants.

(c) When confirmed gas free the space should be entered by a responsible person carrying the gas

meter who should make regular checks during the survey. The Surveyor should never enter the

space ahead of the meter carrier and certainly never on his own. Additional persons with rescue

equipment should be in attendance at the hatch entrance. Surveyors are reminded that the

disturbance of any sediment or residue in tanks may release dangerous gases.

(d) When spaces which may be expected to contain explosive gases are to be examined, all those

taking part in the survey are to make sure that no metal objects which may become dislodged


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are being carried loose in pockets, etc. The wearing of rubber boots and the use of flame-proof

torches is imperative.

(e) The person carrying the gas meter should remain in close contact with the Surveyor to prevent

him from moving into small, undetected pockets of gas which might hang in semi-enclosed

corners.

(f) In cases of tankers having an inert gas system, the most stringent precautions are to be taken toensure that adequate gas freeing has been completed. Inert gas is colourless, odourless andhighly toxic.

(g) The extent of the examination of a space is governed by the degree of cleanliness, the movement

of the ship and the safety measures. Surveys of tanks by means of boats/rafts should only be

undertaken at the discretion of the Surveyor, who should take into account the safety

arrangements provided, including weather forecasting and ship's response in reasonable sea

conditions.

(h) When examining water ballast or fresh water tanks, it is advisable that a responsible person is in

attendance at the pumps in the engine room to eliminate the possibility of the tanks being

flooded by mistake.

(j) The degree of danger caused by the combination of the above factors can only be judged by the

Surveyor on the spot. Consequently he alone can decide how much of the survey can be carried

out safely.


6. Owners are reminded that following the amendment of the 2011 ESP Code, from 01 July 2002 the

evaluation of longitudinal strength is required to be carried out for ore/bulk/oil carriers of length130m and upwards after the ship reaches 10 years of age.

7. For those ships assigned the ESP notation prior to commencement of any part of the Intermediate orSpecial Survey, a survey planning meeting is to be held between the attending Surveyor(s), theOwner’s representative in attendance, the thickness measurement company representative and theMaster of the ship or an appropriately qualified representative appointed by the Master or Owner,with recommendation of the participation of the repairer in order that the Special SurveyProgramme & repairs be sufficiently discussed by ascertaining that all arrangements envisaged in theSurvey Programme are in place and the safe and efficient conduct of the Survey & thicknessmeasurements is to be carried out. Experience has shown that failure to discuss and agree aprogramme of survey and repairs has led to the Owner suffering delays and consequent financialpenalty.


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3.0 Tank Testing Requirements

(Extract) - Tank testing requirements – Single skin an d double skin bu lk carriers

The following information has been extracted from the Rules and Regulations for the Classification of

Ships Part 1, Chapter 3, Section 6.5.1 & Part 1, Chapter 3, Section 5.3.5:

1. Double bottom, deep, ballast, peak and other tanks, including cargo holds assigned also for the

carriage of salt water ballast, are to be tested with a head of liquid to the top of air pipes or to the top

of hatches for ballast/cargo holds. Boundaries of oil fuel, lubricating oil and fresh water tanks are to

be tested with a head of liquid to the maximum filling level of the tank. Tank testing of oil fuel,lubricating oil and fresh water tanks may be specially considered based upon a satisfactory external

examination of the tank boundaries, and a confirmation from the Master stating that the pressure

testing has been carried out according to the requirements with satisfactory results.

Table 3.7.1, 3,8,1 Tank testing requirements – Single hull and double Hull oil tankers, chemical tankers, ore/oil and ore/bulk/oil

ships

Special Survey I

(Ships 5 years old)

Special Survey No. II and subsequent

(Ships 10 years old and over)

All ballast tank boundaries

Cargo tank boundaries facing ballast tanks, void spaces, pipe

tunnels, pump rooms or cofferdams.

All ballast tank boundaries

All cargo tank boundaries


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4.0 Special Survey Requirements – Bulk Carriers

Table 3.6.1 Close-up Survey – Single skin bulk carriers

Special Survey I

(Ships 5 years old)

Special Survey II

(Ships 10 years old)

Special Survey III


Special Survey IV

and subsequent


(1) 25% of frames and theirend attachments in theforward cargo hold atrepresentative positions.

(2) Selected shell frames andtheir end attachments inremaining cargo holds.

(3) 1 transverse web withassociated plating andlongitudinals in 2representative waterballast tanks of each type(i.e. topside or hopperside tank)

(4) 2 selected cargo holdtransverse bulkheadsincluding internalstructure of upper andlower stools, where fitted.This is to include the aftbulkhead of the forwardcargo hold.

(5) All cargo hold hatchcovers and coamings.(plating and stiffeners).

(1) (a) For bulk carriers witha deadweight less than100,000 tonnes, allshell frames in theforward cargo hold and25% of frames in eachof the remaining cargoholds, including their

end attachments andadjacent shell plating.

(b) For bulk carriers with

a deadweight equal to

or greater than 100,000

tonnes, all shell frames

in the forward cargo

hold and 50% of frames

in each of the remaining

cargo holds, including

their end attachments

and adjacent shell

plating.

(2) 1 transverse web withassociated plating andlongitudinals in eachwater ballast tank.

(3) Forward and afttransverse bulkhead in 1side ballast tank,including stiffeningsystem.

(4) All cargo holdtransverse bulkheadsincluding internalstructure of upper andlower stools, wherefitted.

(5) All cargo hold hatchcovers and coamings(plating and stiffeners).

(6) All deck plating andunderdeck structureinside line of hatchopenings between allcargo hold hatches.

(1) All shell frames in theforward and one otherselected cargo hold and50% of frames in eachof the remaining cargoholds, including theirend attachments andadjacent shell plating.

(2) All transverse webs withassociated plating andlongitudinals in eachwater ballast tank.

(3) All transverse bulkheadsin ballast tanks,including stiffeningsystem.




(1) All shell frames in allcargo holds, includingtheir end attachmentsand adjacent shellplating.

(2) All transverse webs withassociated plating andlongitudinals in each

water ballast tank.




(6) All deck plating andunderdeck structureinside line of hatchopenings betweencargo hold hatches.

NOTES

The requirements in this Table apply to all single skin bulk carriers unless stated otherwise.

(1) Ballast Tank includes peak tanks(2) Close-up survey of transverse bulkheads to be carried out at four levels:

Level (a) Immediately above the inner bottom and immediately above the line of gussets (if fitted) and shedders forships without lower stool.

Level (b) Immediately above and below the lower stool shelf plate (for those ships fitted with lower stools), andimmediately above the line of the shedder plates.

Level (c) About mid-height of the bulkhead.Level (d) Immediately below the upper deck plating and immediately adjacent to the upper wing tank and immediately


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below the upper stool shelf plate for those ships fitted with upper stools, or immediately below the topsidetanks.

Table 3.6.2 Close-up Survey – Double skin bulk carriers (excluding ore carriers)

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV

and subsequent


(1) 1 transverse web withassociated plating andlongitudinals in 2representative water ballasttanks of each type. This isto include the foremosttopside and double sideballast tanks on either side.

(2) 2 selected cargo holdtransverse bulkheadsincluding internal structure

of upper and lower stools,where fitted.

(3) All cargo hold hatch coversand coamings (plating andstiffeners).

(1) 1 transverse web withassociated plating andlongitudinals in eachwater ballast tank.

(2) Forward and afttransverse bulkheads,including stiffeningsystem, in 1 completedouble side ballast tankon one side of the ship(i.e. port or starboard),

see Note 1.(3) 25% of ordinary

transverse web frames inthe foremost double sidetanks.

(4) One transverse bulkheadin each cargo holdincluding internalstructure of upper andlower stools, wherefitted.




(2) All transverse bulkheadsin ballast tanks, includingstiffening system.

(3) 25% of ordinarytransverse web frames inall double side tanks.

(4) All cargo hold transversebulkheads includinginternal structure ofupper and lower stools,where fitted.





(3) All ordinary transverseweb frames in all doubleside tanks.




NOTES

(1) Complete ballast tank means topside tank, hopper tank, double bottom tank and double side tank, even if these are separate.(2) Ballast Tank includes peak tanks.(3) Close-up survey of transverse bulkheads to be carried out at four levels:

Level (a) Immediately above the inner bottom and immediately above the line of gussets (if fitted) and shedders for shipswithout lower stool.


Level (c) About mid-height of the bulkhead.

Level (d) Immediately below the upper deck plating and immediately adjacent to the upper wing tank and immediatelybelow the upper stool shelf plate for those ships fitted with upper stools, or immediately below the topside tanks.


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Table 3.6.3 Close-up Survey – Ore carriers

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV

(Ships 20 years old and

over)

(1) 1 web frame ring

complete includingadjacent structuralmembers in a waterballast wing tank.

(2) 1 transverse bulkheadlower part includinggirder system andadjacent structuralmembers in a ballasttank.

(3) 2 selected cargo holdtransverse bulkheads,including internalstructure of upper andlower stools wherefitted. see Note 2.


(1) All web frame rings

complete including adjacentstructural members in awater ballast wing tank.

(2) 1 deck transverse includingadjacent structural membersin each remaining waterballast tank.

(3) Forward and aft transversebulkheads including girdersystem and adjacentstructural members in aballast wing tank.

(4) 1 transverse bulkhead lowerpart including girder systemand adjacent structuralmembers in each remainingballast tank.

(5) 1 transverse bulkhead ineach cargo hold, includinginternal structure of upperand lower stools wherefitted, see Note 2.


(7) All deck plating and underdeck structure inside line ofhatch openings between allcargo hold hatches.

(1) All web frame rings complete

including adjacent structuralmembers in each waterballast tank.

(2) All transverse bulkheadsincluding girder system andadjacent structural membersin each ballast tank.

(3) 1 web frame ring completeincluding adjacent structuralmembers in each wing voidspace.

(4) Additional web frame ringsincluding adjacent structuralmembers in void spaces asdeemed necessary by theSurveyor.

(5) All cargo hold transversebulkheads, including internalstructure of upper and lowerstools where fitted, see Note2.


(7) All deck plating and underdeck structure inside line ofhatch openings between allcargo hold hatches.

(1) All web frame rings

complete includingadjacent structuralmembers in each waterballast tank.

(2) All transverse bulkheadsincluding girder systemand adjacent structuralmembers in each ballasttank.

(3) 1 web frame ringcomplete includingadjacent structuralmembers in each wingvoid space.

(4) Additional web framerings including adjacentstructural members invoid spaces as deemednecessary by theSurveyor.

(5) All cargo holdtransverse bulkheads,including internal

structure of upper andlower stools wherefitted, see Note 2.


(7) All deck plating andunder deck structureinside line of hatchopenings between allcargo hold hatches.

NOTES

1. Ballast tank includes peak tanks.

2. Close-up Survey of transverse bulkheads to be carried out at four levels:

Level (a) Immediately above the inner bottom and immediately above the line of gussets (if fitted) and shedders for ships

without lower stool.

Level (b) Immediately above and below the lower stool shelf plate (for those ships fitted with lower stools), and immediately

above the line of the shedder plates.

Level (c) About mid-height of the bulkhead.

Level (d) Immediately below the upper deck plating and immediately adjacent to the upper wing tank and immediately belowthe upper stool shelf plate for those ships fitted with upper stools, or immediately below the topside tanks.


19/44


Table 3.6.4 Thickness measurement – Single skin and double skin bulk carriers

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV

and subsequent


(1) Measurement, for

generalassessment andrecording ofcorrosion pattern,of those structuralmembers subjectto Close-up Surveyin accordance withTable 3.6.1, 3.6.2or Table 3.6.3.

(2) Critical areas, asrequired by theSurveyor.

(1) Within the cargo length area:

2 sections of deck platingoutside line of cargo hatchopenings.

(2) Measurement, for generalassessment and recording ofcorrosion pattern, of thosestructural members subject toClose-up Survey in accordancewith Table 3.6.1, 3.6.2 orTable 3.6.3.

(3) Wind and water strakes in way

of the transverse sectionsconsidered in item (1).

(4) Selected wind and waterstrakes outside the cargolength area.

(5) Cargo hold shell frames onsingle skin ships, see Note 5.

(6) Critical areas, as required bythe Surveyor.

(1) Within the cargo length

area:

(a) Each deck plateoutside the line ofcargo hatch openings.

(b) 2 transverse sections,outside line of cargohatch openings. (Aminimum of 1 of theabove transversesections is to be within0.5L amidships)

(2) Measurement, for generalassessment and recording

of corrosion pattern, ofthose structural memberssubject to Close-up Surveyin accordance with Table3.6.1, 3.6.2 or Table3.6.3.

(3) All wind and waterstrakes within the cargolength area.

(4) Selected wind and waterstrakes outside the cargolength area.

(5) All cargo hatch covers andcoamings (plating andstiffeners).

(6) All transverse webs withassociated plating andlongitudinals, and thetransverse bulkheadcomplete in the fore peaktank and aft peak tank(see Note 1 & 3).

(7) The aft bulkhead of theforward cargo hold onsingle skin ships (see note4).

(8) Cargo hold shell frameson single skin ships, see Note 5.

(9) Critical areas, as requiredby the Surveyor.

(1) Within the cargo length area:

(a) Each deck plate outside the line ofcargo hatch openings.

(b) 3 transverse sections, outside lineof cargo hatch openings. (Aminimum of 2 of the abovetransverse sections is to be within0.5L amidships)

(c) Each bottom plate

(2) Measurement, for general assessmentand recording of corrosion pattern, ofthose structural members subject toClose-up Survey in accordance withTable 3.6.1, 3.6.2 or Table 3.6.3.

(3) All wind and water strakes over the full

length of the ship, port and starboard.(4) All cargo hatch covers and coamings

(plating and stiffeners).

(5) Remaining exposed main deck plates notconsidered in item (1) and representativeexposed superstructure deck plating (i.e.poop, bridge and forecastle deck).

(6) All transverse webs with associatedplating and longitudinals, and thetransverse bulkhead complete in the forepeak tank and aft peak tank (see Note 1& 3).

(7) All keel plates outside the cargo lengtharea. Also additional bottom plates in

way of cofferdams, Machinery space andaft end of tanks.

(8) Plating of seachests. Also side shellplating in way of overboard discharges,as considered necessary by the Surveyor.

(9) The aft bulkhead of the forward cargohold on single skin ships (see note 4).

(10) Cargo hold shell frames on single skinships, see Note 5.

(11) Critical areas, as required by theSurveyor.

NOTES

The requirements in this table apply to both single skin and double skin ships unless stated otherwise.

(1) For areas in spaces where coatings are found to be in GOOD condition, as defined in 1.5, the extent of thickness measurement may be speciallyconsidered. Prior to any coating or re-coating of cargo holds, scantlings are to be confirmed by thickness measurement with the Surveyor inattendance.

(2) Transverse sections should be chosen where the largest reductions are likely to occur, or as revealed by deck plating measurement.

(3) Transverse bulkhead complete including stiffening system.

(4) For ships assigned the notation ESN, the corrugated part of the aft transverse bulkhead of the forward cargo hold is to be subject to thicknessmeasurement. This is to include each vertical corrugation at its lower and middle level including shedder plates and gusset plates, whereapplicable.

(5) Single skin bulk carriers contracted for construction prior to 01 July 1998 are to undergo a re-assessment of their cargo hold shell frames in

accordance with the Provisional Rules for Existing Ships . The number of shell frames to be measured is equivalent to number of shell framessubject to close-up survey (see Table 3.6.1.), with representative measurements to be taken at specific areas for each frame.


20/44


5.0 Special Survey Requirem ents – oil tankers

Table 3.7.2 Close-up Survey – Single hull oil tankers

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV

and subsequent


(1) One web frame ring - in awing ballast tank, if any, ora cargo wing tank usedprimarily for water ballast(see Note 1)

(2) One deck transverse - in acargo tank (see Note 2)

(3) One transverse bulkhead(see Note 4):

(a) in a ballast tank

(b) in a cargo wing tank

(c) in a cargo centre tank

(1) All web frame rings - in

a wing ballast tank, if

any, or a cargo wing

tank used primarily for

water ballast (see Note

1)

(2) One deck transverse (see Note 2 and 8):

(a) in each of theremaining ballasttanks, if any


(c) in 2 cargo centre

tanks

(3) Both transversebulkheads - in a wingballast tank, if any, or acargo wing tank usedprimarily for waterballast (see Note 3)


(a) in each of theremaining ballasttanks, if any

(b) in a cargo wing tank(c) in 2 cargo centre

tanks

(1) All web frame rings (see

Note 1)

(a) in all ballast tanks


(2) A minimum of 30% ofall web frame rings ineach remaining cargowing tank (see Notes 1and 8

(3) All transverse bulkheadsin all cargo and ballasttanks (see Note 3)

(4) A minimum of 30% of

deck and bottomtransverses in each cargocentre tank (see Notes 5and 8)

(5) As considered necessaryby the Surveyor (see Note 6)

(1) As Special Survey III

(2) Additional transverse

areas if deemednecessary by the Surveyor

NOTES (1) Complete transverse web frame ring including adjacent

structural members.(2) Deck transverse including adjacent deck structural members.(3) Transverse bulkhead complete, including girder system and

adjacent members, and adjacent longitudinal bulkheadstructure.

(4) Transverse bulkhead and lower part including girder systemand adjacent structural members.

(5) Deck and bottom transverse including adjacent structuralmembers.

(6) Additional complete transverse web frame ring.(7) Ballast tanks includes peak tanks.(8) Within the mid 0,5 length of the tank. The 30% is to be

rounded up to the next whole number of structural items.


21/44


Table 3.7.3 Close-up Survey – Double hull oil tankers

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV

and subsequent


(1) One web frame ring in a

complete ballast tank, see Notes 1 & 3.

(2) One deck transverse in acargo tank, see Note 4 &12.

(3) One transverse bulkhead ina complete ballast tank,see Notes 1 & 6.

(4) One transverse bulkhead ina cargo centre tank, see

Notes 2 & 7.

(5) One transverse bulkhead ina cargo wing tank, see Note 7.

(1) All web frame rings in a

complete ballast tank,see Notes 1 & 3.

(2) The knuckle area and theupper part (approx. 5metres) of one webframe ring in eachremaining ballast tank,see Note 8.

(3) One deck transverse intwo cargo tanks, see Note 4.

(4) One transverse bulkheadin each complete ballasttank, see Note 1 & 6.

(5) One transverse bulkheadin two cargo centretanks, see Notes 2 & 7.

(6) One transverse bulkheadin a cargo wing tank, see Note 7.

(1) All web frame rings in all

ballast tanks, see Note 3.

(2) All web frame rings in acargo tank, see Note 9.

(3) One web frame ring ineach remaining cargotank, see Note 9.

(4) All transverse bulkheadsin all cargo and ballasttanks, see Note 5 & 6.

(5) As considered necessaryby the surveyor, see note10.

(1) As Special Survey III.

(2) Additional transverseareas if deemednecessary by theSurveyor.

NOTES (1) Complete ballast tank means double bottom tank plus the

double side tank and the double deck tank, as applicable,even if these are separate.

(2) Where there are no centre tanks, the transverse bulkheads inwing tanks are to be subject to Close-up Survey.

(3) Web frame ring in a ballast tank includes the vertical web inside tank, hopper web in hopper tank, floor in doublebottom tank and deck transverse in a double deck tank andadjacent structural members. In peak tanks a web framemeans a complete transverse web frame, including adjacentstructural members.

(4) Deck transverse including adjacent deck structural members(or external structure on deck in way of the tank, where

applicable).(5) Transverse bulkhead complete in cargo tanks, including

girder system, adjacent structural members (includinglongitudinal bulkheads) and internal structure of lower andupper stools, where fitted.

(6) Transverse bulkhead complete in ballast tanks, includinggirder system and adjacent structural members includinglongitudinal bulkheads, girders in double bottom tanks,inner bottom plating, hopper side, connecting brackets.

(7) Transverse bulkhead lower part in cargo tanks, includinggirder system, adjacent structural members (includinglongitudinal bulkheads) and internal structure of lowerstool, where fitted.

(8) The knuckle area and the upper part (approximately 5metres), including adjacent structural members. Knucklearea is the area of the web frame around the connectionsof the sloping hopper plating to the inner hull bulkheadand the inner bottom plating, up to 2 metres from thecorners both on the bulkhead and the double bottom.

(9) Web frame ring in cargo tank includes deck transverse,longitudinal bulkhead vertical girder and cross ties, wherefitted, and adjacent structural members.

(10) Additional complete transverse web frame ring.

(11) Ballast tanks includes peak tanks.

(12) Within the mid 0,5 length of the tank.


22/44


Table 3.7.6 Thickness Measurement – Single hull and double Hull oil tankers, ore/oil ships and ore/bulk/oil ships

Special Survey I

(Ships 5 years old)

Special Survey III


Special Survey IV

and subsequent


(1) 1 section of deck plating for the full

beam of the ship within 0.5L amidshipsin way of a ballast tank, if any, or acargo tank used primarily for waterballast.

(2) Measurements for general assessmentand recording of corrosion pattern ofthe structural members subject toclose-up survey in accordance withTable 3.7.2, Table 3.7.3, Table 3.7.4 orTable 3.7.5.


(1) Within the cargo area:

(a) Each deck plate.(b) 2 transverse sections, see note 6.

(2) Measurements for generalassessment and recording ofcorrosion pattern of the structuralmembers subject to close-up surveyin accordance with Table 3.7.2,Table 3.7.3, Table 3.7.4 or Table3.7.5..

(3) Selected wind and water strakesoutside the cargo area.

(4) All wind and water strakes withinthe cargo area.

(5) All cargo hold hatch covers andcoamings (plating and stiffeners).(see Note 5)

(6) All transverse webs with associatedplating and longitudinals, and thetransverse bulkhead complete in thefore peak tank and aft peaktank,(see Note 1 & 4).



(a) Each deck plate.(b) 3 transverse sections, see note

6.(c) Each bottom plate.

(2) Measurements for generalassessment and recording ofcorrosion pattern of the structuralmembers subject to close-up surveyin accordance with Table 3.7.2,Table 3.7.3, Table 3.7.4 or Table3.7.5.

(3) All wind and water strakes over thefull length of the ship, port andstarboard.

(4) All cargo hold hatch covers andcoamings (plating and stiffeners).see Note 5)

(5) Remaining exposed main deckplating not considered in item (1)and representative exposedsuperstructure deck plating (i.e.poop, bridge and forecastle deck).

(6) All transverse webs with associatedplating and longitudinals, and thetransverse bulkhead complete in thefore peak tank and aft peak tank(see Note 1 & 4).

(7) All keel plates outside the cargotank length. Also additional bottomplates in way of cofferdams,Machinery space and aft end oftanks.

(8) Plating of seachests. Also side shellplating in way of overboarddischarges, as considered necessaryby the Surveyor.


Special Survey II


(1) Within the cargo area:(a) Each deck plate.(b) 1 transverse section, see note 6.

(2) Measurements for general assessmentand recording of corrosion pattern ofthe structural members subject toclose-up survey in accordance withTable 3.7.2, Table 3.7.3, Table 3.7.4 or

Table 3.7.5.


(4) Critical areas, as required by theSurveyor

NOTES (1) For areas in tanks where coatings are found to be in GOOD condition, as defined in 1.5, the extent of thickness measurements

may be specially considered.(2) Transverse sections should be chosen where the largest reductions are likely to occur, or as revealed by deck plating

measurements.(3) Where two or three transverse sections are required to be measured, at least one is to include a ballast tank within 0.5L

amidships.

(4) Transverse bulkhead complete including stiffening system.(5) All cargo hold hatch covers and coamings, where fitted, are to be measured on ore/oil and ore/bulk/oil ships.(6) For oil tankers (including ore/oil and ore/bulk/oil ships), with length 130 m and 10 years old and above, the longitudinal strength

is to be evaluated. In such cases, a minimum of three transverse sections are to be measured within 0.5L amidships.


23/44


6.0 Special Survey Requirements – chemical tankers

Table 3.8.2 Close-up Survey – Single hull chemical tankers

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV



ballast wing tank, see Note 1

(2) One deck transverse in a

cargo tank or on deck, see

Note 2

(3) One transverse bulkhead in

a ballast tank, see Note 3


a cargo wing tank, see Note 3


a cargo centre tank, see Notes

3 and 5

(1) All web frame rings in a ballast

wing tank, see Note 1

(2) One deck transverse in each

remaining ballast tank or on deck,

see Note 2

(3) One deck transverse in a cargo

wing tank or on deck, see Note 2

(4) One deck transverse in two

cargo centre tanks or on deck,

see Note 2

(5) Both transverse bulkheads in a

ballast wing tank, see Note 4


remaining ballast tank, see Note 3

(7) One transverse bulkhead in acargo wing tank, see Note 3


two cargo centre tanks, see Notes

3 and 5


ballast tanks, see Note 1


cargo wing tank, see Note 1

(3) One web frame ring in eachremaining cargo tank, see Note

1

(4) All transverse bulkheads – in

all cargo and ballast tanks, see

Notes 4


(2) Additional transverse areas

if deemed necessary by the

Surveyor

NOTES

1. Complete transverse web frame ring including adjacent structural members.

2. Deck transverse including adjacent deck structural members (or external structure on deck in way of the tank).

3. Transverse bulkhead lower part including girder system and adjacent structural members.

4. Transverse bulkhead complete, including girder system and adjacent members, and adjacent longitudinal bulkhead structure.

5. Where there are no centre tanks, the transverse bulkheads in wing tanks are to be subject to Close-up Survey.



24/44


Table 3.8.3 Close-up Survey – Double hull chemical tankers

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV



ballast double hull tank, see

Notes 1 and 6

(2) One deck transverse in a cargo

tank or on deck, see Note 2

(3) One transverse bulkhead in a

ballast tank, see Note 4




cargo centre tank, see Notes 3and 5


ballast double hull tank, see

Notes 1 and 6

(2) The knuckle area and the

upper part (approx. 3 m) of

one web frame ring in each

remaining ballast tank

(3) One deck transverse in

two cargo tanks, see Note 2

(4) One transverse bulkhead

in each ballast tank, see Note

4


in a cargo wing tank, see

Note 3


in two cargo centre tanks,

see Notes 3 and 5


ballast tanks, see Note 1



(3) One web frame ring in each

remaining cargo tank, see Note

1

(4) All transverse bulkheads – in

all cargo and ballast


(2) Additional transverse areas if

deemed necessary by the

Surveyor

NOTES




4. Transverse bulkhead complete, including girder system and adjacent members, and adjacent longitudinal bulkhead structure.


6. Double hull tank includes double bottom and side tank even though these tanks may be separate.



25/44


Table 3.8.4- Thickness Measurements –single double hull chemical tankers

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV


(1) 1 section of the

deck plating for thefull beam of the ship

within 0.5L amidships

(in way of a ballast

tank, if any).

(2) Measurements for

the assessment and

recording of corrosion

pattern of the

structural members

subject to close-up

survey in accordancewith Table 3.8.2 or

3.8.3

(3) Critical areas as

required by the

Surveyor.

(1) Within the cargo

area:

(a) Each Deck

plate.

(b) 1 transverse

section

(2) Measurements for

the assessment and

recording of corrosion

pattern of the

structural members

subject to close-up

survey in accordance

with Table 3.8.2 or

3.8.3

(3) Selected wind and

water strakes outside

the cargo area

(4) Critical areas as

required by the

Surveyor.


(a) Each Deck plate.

(b) 2 transverse section

(2) Measurements for the

assessment and recording of

corrosion pattern of the structural

members subject to close-up

survey in accordance with Table

3.8.2 or 3.8.3

(3) Selected wind and water

strakes outside the cargo area

(4) All wind and water strakes

within the cargo area

(4) All cargo hatch covers and

Coamings

(5) All transverse webs with

associated plating and

longitudinals, and the transverse

bulkhead complete in the fore

peak tank and aft peak tank.(see

notes 1 and 4)

(6) Critical areas as required by the

Surveyor.

(1) Within the cargo tank length:

(a) Each deck plate.

(b) 3 transverse sections

(c) Each bottom plate

(2) Measurements for the

assessment and recording of

corrosion pattern of the structural

members subject to close-up survey

in accordance with Table 3.8.2 or

3.8.3

(3) All wind and water strakes over

the full length of the ship port and

starboard

(4) All cargo hatch covers and

Coamings

(5) Remaining exposed main deck

plating not considered in item (1)

and representative exposed

superstructure deck plating (i.e.

poop, bridge and forecastle deck).

(6) All transverse webs with

associated plating and

longitudinals, and the transverse

bulkhead complete in the fore peak

tank and aft peak tank.

(7) All keel plates outside the cargo

tank length. Also additional bottom

plates in way of cofferdams,

machinery space and aft end of

tanks.

(8) Plating of sea chests. Also side

shell plating in way of overboard

discharges, as considered necessary

by the Surveyor.

(8) Critical areas as required by the

Surveyor.

NOTES




4. Transverse bulkhead complete, including girder system and adjacent members, and adjacent longitudinal bulkhead

structure.


6. Double hull tank includes double bottom and side tank even though these tanks may be separate.


26/44




27/44


7.0 Special Survey Requirements – ore/oil

ore/bulk/oil ships

Table 3.7.4 Close-up Survey – ore / oil ships

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV

and subsequent


(4) One web frame ring - in awing ballast tank, if any,or a cargo wing tank usedprimarily for water ballast

(see Note 1)

(5) One deck transverse - in acargo tank (see Note 2)


(a) in a ballast tank


(c) (c) in a cargo centretank

(1) All web frame rings - in

a wing ballast tank, if

any, or a cargo wing

tank used primarily forwater ballast (see Note

1)

(3) One deck transverse (see Note 2 and 6):

(b) in each of theremaining ballasttanks, if any


(c) in 2 cargo centre

tanks

(5) Both transversebulkheads - in a wingballast tank, if any, or acargo wing tank usedprimarily for waterballast (see Note 3)


(d) in each of theremaining ballasttanks.

(e) in a cargo wing tank

(f) in 2 cargo centretanks

(7) Selected cargo holdhatch covers andcoamings (plating andstiffeners)

(8) Selected areas of deckplating inside line ofhatch openings betweencargo hold hatches.

(1) All web frame rings (see

Note 1)

(a) in all ballast tanks

(b) in a cargo wingtank

(6) One web frame ring - ineach remaining cargowing tank (see Note 1and 6

(7) One deck transverse - ineach cargo centre tank(see Note 2 and 6)

(8) All transverse bulkheadsin all cargo and ballasttanks (see Note 3)

(9) All cargo hold hatchcovers and coamings(plating and stiffeners)

(10) All deck plating insideline of hatch openingsbetween cargo holdhatches.

(11) As considered necessaryby the Surveyor (see Note 5)


(2) Additional transverse

areas if deemed

necessary by the Surveyor


28/44


NOTES(1) Complete transverse web frame ring including adjacent

structural members.(2) Deck transverse including adjacent deck structural

members.(3) Transverse bulkhead complete, including girder system and

adjacent members, and adjacent longitudinal bulkhead

structure.

(4) Transverse bulkhead and lower part including girdersystem and adjacent structural members.

(5) Additional complete transverse web frame ring.(6) Within the mid 0,5 length of the tank.


29/44


Table 3.7.5 Close-up Survey – ore/bulk/oil ships

Special Survey I

(Ships 5 years old)

Special Survey II


Special Survey III


Special Survey IV

and subsequent


(6) 25% of frames and theirend attachments in theforward cargo hold atrepresentative positions.

(7) Selected frames and theirend attachments inremaining cargo holds.

(8) 1 transverse web withassociated plating andlongitudinals in 2representative waterballast tanks of each type(i.e. topside, hopper side

or side tank)

(9) 2 selected cargo holdtransverse bulkheadsincluding internalstructure of upper andlower stools, wherefitted. This is to includethe aft bulkhead of theforward cargo hold.

(7) 25% of shell framesincluding their endattachments andadjacent shell plating inall cargo holds.

(8) 1 transverse web withassociated plating andlongitudinals in eachwater ballast tank (i.e.topside, hopper side orside tank).

(9) Forward and afttransverse bulkhead in 1

side ballast tank,including stiffeningsystem.

(10) 1 transverse bulkhead ineach cargo holdincluding internalstructure of upper andlower stools wherefitted. This is to includethe aft bulkhead of theforward cargo hold.

(11) Selected cargo holdhatch covers andcoamings. (plating andstiffeners).

(12) Selected areas of deckplating inside line ofhatch openings betweencargo hold hatches.

(7) All shell frames in theforward cargo hold and25% of frames inremaining cargo holds,including their endattachments andadjacent shell plating.

(8) All transverse webs withassociated plating andlongitudinals in eachwater ballast tank (i.e.topside, hopper side orside tank)




(12) All deck plating insideline of hatch openingsbetween cargo holdhatches.

(7) All shell frames includingtheir end attachmentsand adjacent shellplating in all cargo holds.

(8) All transverse webs withassociated plating andlongitudinals in eachwater ballast tank (i.e.topside, hopper side orside tank).




(12) All deck plating inside

line of hatch openingsbetween cargo holdhatches.

NOTES(1) Ballast Tank includes peak tanks(2) Close-up survey of transverse bulkheads to be carried out at four levels:

Level (a) Immediately above the inner bottom and immediately above the line of gussets (if fitted) and shedders for shipswithout lower stool.


Level (c) About mid-height of the bulkhead.Level (d) Immediately below the upper deck plating and immediately adjacent to the upper wing tank and immediately

below the upper stool shelf plate for those ships fitted with upper stools, or immediately below the topside

tanks


30/44


Table 3.7.6 Thickness Measurement – Single hull and double Hull oil tankers, ore/oil ships and ore/bulk/oil ships

Special Survey I

(Ships 5 years old)

Special Survey III


Special Survey IV

and subsequent


(4) 1 section of deck plating for the full

beam of the ship within 0.5L amidshipsin way of a ballast tank, if any, or acargo tank used primarily for waterballast.

(5) Measurements for general assessmentand recording of corrosion pattern ofthe structural members subject toclose-up survey in accordance withTable 3.7.2, Table 3.7.3, Table 3.7.4 orTable 3.7.5.



(c) Each deck plate.(d) 2 transverse sections, see note 6.

(9) Measurements for generalassessment and recording ofcorrosion pattern of the structuralmembers subject to close-up surveyin accordance with Table 3.7.2,Table 3.7.3, Table 3.7.4 or Table3.7.5..


(11) All wind and water strakes withinthe cargo area.

(12) All cargo hold hatch covers andcoamings (plating and stiffeners).(see Note 5)




(d) Each deck plate.(e) 3 transverse sections, see note

6.(f) Each bottom plate.

(10) Measurements for generalassessment and recording ofcorrosion pattern of the structuralmembers subject to close-up surveyin accordance with Table 3.7.2,Table 3.7.3, Table 3.7.4 or Table3.7.5.

(11) All wind and water strakes over thefull length of the ship, port andstarboard.

(12) All cargo hold hatch covers andcoamings (plating and stiffeners).see Note 5)

(13) Remaining exposed main deckplating not considered in item (1)and representative exposedsuperstructure deck plating (i.e.poop, bridge and forecastle deck).


(15) All keel plates outside the cargotank length. Also additional bottomplates in way of cofferdams,Machinery space and aft end oftanks.

(16) Plating of seachests. Also side shellplating in way of overboarddischarges, as considered necessaryby the Surveyor.


Special Survey II


(2) Within the cargo area:(c) Each deck plate.(d) 1 transverse section, see note 6.

(4) Measurements for general assessmentand recording of corrosion pattern ofthe structural members subject toclose-up survey in accordance withTable 3.7.2, Table 3.7.3, Table 3.7.4 or

Table 3.7.5.


(5) Critical areas, as required by theSurveyor

NOTES(7) For areas in tanks where coatings are found to be in GOOD condition, as defined in 1.5, the extent of thickness measurements

may be specially considered.(8) Transverse sections should be chosen where the largest reductions are likely to occur, or as revealed by deck plating

measurements.(9) Where two or three transverse sections are required to be measured, at least one is to include a ballast tank within 0.5L

amidships.

(10) Transverse bulkhead complete including stiffening system.(11) All cargo hold hatch covers and coamings, where fitted, are to be measured on ore/oil and ore/bulk/oil ships.(12) For oil tankers (including ore/oil and ore/bulk/oil ships), with length 130 m and 10 years old and above, the longitudinal strength

is to be evaluated. In such cases, a minimum of three transverse sections are to be measured within 0.5L amidships.


31/44


8.0 Table of Maximum Permissible Diminution

of Individual Plates and Stiffeners of non-CSR Ships

Structural item Category 1

ships

See Note 5

Category 2 & 3

ships

See Note 5

TM Report Form

Hull envelope: individual plates, shell and deck

plating recorded along the strake (deck, bottom,

side, wind and water)

20% See Note 2 30%TM 1

See Note 3

Hull envelope: transverse section, plates recorded

by frame number and strake position (deck and

sheer/bottom and side)

20% 30% TM 2~3

Longitudinal structural members (including deck

and shell longitudinal stiffeners, longitudinal

bulkhead plating and stiffeners, inner bottom plating

and stiffeners, hopper sloping plating and stiffeners.

(See Note 4.2 for additional bulk carrier diminution

criteria)

Plating 20%

Stiffeners 25%

Plating 30%

Stiffeners 25%

TM 2~3

See Note 3

Transverse struc tural members in C.O. and W.B.

tanks (including web frame plating and face plates)20% 25% TM 4

W.T. and O.T. transverse bulkheads including

deep tank bulkheads (See Note 4.1 for additional

bulk carrier diminution criteria)

Plating 25% Plating 30% TM 5, TM 5 UR S18,

TM 5 UR S19, TM 5

UR S19%

See Note 4.1 (f), (g)

Stiffeners and

corrugated

bulkhead plating

25%

Stiffeners and

corrugated

bulkhead

plating 25%

Miscellaneous structural members (including

deck plating inside the line of cargo hatch openings)

Plating 25% Plating 30% TM 6, TM 6UR S21,

TM 6UR S21A

Stiffeners 25% Stiffeners 25% See Note 3 , 7

Cargo hold transverse frames and end brackets

(See Note 4 for additional bulk carrier diminution

criteria)

20% 25% TM 7


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NOTES

1. For ships with (cc) notation, Surveyors are to compare the measurements with the original Rule thickness

and not the reduced, as built, scantlings which were approved in association with the (cc ) notation.

2. For oil tankers of Category 1 the strength deck residual buckling thickness requirement is to be complied

with in accordance with Lloyd’s Register requirements as advised by the attending Surveyor.

3. Where extensive additional measurements are taken for continuous longitudinal plating these may be

reported on Form TM6 as applicable.

4. Additional Bulk Carrier diminution criteria:

4.1 Cargo hold transverse bulkheads

(a) Corrugated parts within cargo holds designed to be fully filled with salt-water ballast (deep tank) – 25%.

(b) Corrugated parts within cargo holds designed to be partially filled with salt-water ballast – 15%.

(c) Corrugated parts of the aft transverse bulkhead of the forward cargo hold – 15%, see (f), (g) below.

(d) Corrugated parts of the remaining transverse bulkheads in cargo holds – 20%.

(e) All plain transverse bulkhead plating (including stool plating) – 25%.

(f) For the aft transverse bulkhead of the forward cargo hold on bulk carriers which have been assessed

and/or upgraded in order to comply with requirements for the notation ESN-HOLD 1 & ESN-ALL HOLDS (URS19), refer to the Approved Bulkhead Upgrade Plan for diminution criteria.

These measurements are to be recorded on Form TM5 UR S19. In case the Approved Bulkhead Upgrade

Plan indicates that it is required to apply Classification Rules, then TM5 UR S19% should be used instead.

(g) For the bulkheads of cargo holds on bulk carriers which are contracted for construction on or after 1 July

1998, of 150m in length and above and of single skin (have been assessed in order to comply with

requirements of the notation ESN) and double skin construction, intended to carry solid bulk cargoes having

density of 1.0t/m^3, or above, with vertically corrugated transverse bulkheads (UR S18), measurements are to

be recorded on Form TM5 UR S18.

4.2 Cargo hold inner bottom and hopper sloping plating

(a) Where the notation Strengthened For Heavy Cargoes is assigned and length L is greater than 150 metres


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then the maximum diminution applicable is 25%. For all other bulk carriers refer to longitudinal structural

members above.

4.3 Cargo hold transverse frames (shell frames)

For single skin bulk carriers contracted for construction prior to 1 July 1998 undergoing a re-assessment of

their cargo hold shell frames in accordance with the Provisional Rules for Existing Ships (UR S31),

measurements are to be compared against the minimum thickness values shown in the evaluation records.

These measurements are to be recorded on TM7UR S31. For all other bulk carriers refer to ’Cargo hold

transverse frames and end brackets’ above.

5. For thickness measurement evaluation purposes, ship categories are defined as follows:

Category 1: Non CSR Oil tankers, chemical tankers, dry bulk cargo ships, combination carriers and liquefied

gas ships having a length L equal to or greater than 90 metres.

Category 2: All remaining ship types not included in Category 1 and having a length L equal to or greater

than 90 metres.

Category 3: All ship types having a length L less than 90 metres.

(L is the Rule length defined in Part 3, Chapter 1.6.1 of the Rules for Ships.)

6. The maximum diminutions are for the average thickness measured over the plate area or over the length

between supports.

7. Bulk Carriers which are contracted for construction on or after 1 July 1998 (not including CSR ships), are

required to comply with the evaluation of scantlings of hatch covers of cargo holds (UR S21). In addition to

the above, Bulk Carriers, Ore Carriers and Combination Carriers contracted for construction on or after 1

January 2004 are required to comply with the evaluation of scantlings of hatch coamings of cargo holds in

accordance to UR S21.6.2.

Measurements are to be recorded on Form TM6 UR S21.

8. All ships except bulk carriers, ore carriers and combination carriers contracted for construction on or after 1

July 2012 and required to comply with the evaluation of scantlings of hatch covers and coamings on exposed

decks (UR S21A). In specific, requirements should be applied in accordance to UR S21A.7.1. Measurements

are to be recorded on Form TM6 UR S21A.


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9.0 Com mon Structural Rules (CSR)

Thickness Measurement Acceptance Criteria

Definitions

Local corrosion: Local corrosion is pitting corrosion, grooving, edge corrosion, necking effect

or other corrosions of very local aspect.

Substantial corrosion: Substantial corrosion is an extent of corrosion such that assessment of

the corrosion pattern indicates a gauged (or measured) thickness between t renewal

and t renewal

+

t reserve .

Net scantling thickness: Net thickness throughout the ship’s life.

Corrosion allowance a dditional thickness: Corrosion addition on each side of the structural

member considers the contents of the compartment to which it is exposed

Reserve additional thickness: 0.5 mm, wastage allowance in reserve for corrosion occurring

in the two and half years between Intermediate and Special surveys

Voluntary additional thickness: Owner/builder additional wastage allowance.

original thickness

Maximum

allowable

diminution

Diminution within

this range is considered

t

net

Substantial corrosion

range

between:

t

net

+ 0.5mm and t

net


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Local strength criteria - Renewal thickness for general corrosion

General corrosion is defined as areas where general uniform reduction of material thickness

is found over an extensive area

For each structural item, steel renewal is required when the gauged thickness t gauged

is less

than the renewal thickness, as specified in the following formula:

t gauged

< t renewal

,

Where the gauged thickness t gauged

is such as:

t renewal

< t gauged

< t renewal

+ t reserve

Coating applied in accordance with the coating manufacturer’s requirements or annual

gauging may be adopted as an alternative to the steel renewal. The coating is to be

maintained in good condition and annual examination is required by the surveyor. .

The minimum allowable hull girder sectional properties in the corroded condition are

calculated using the same corrosion thickness reductions that are used during the

newbuilding stage, thus linking the newbuilding and ship in operation criteria. Therefore the

calculation of the minimum allowable hull girder sectional properties is to be based on a

member thickness, t , given by:

t = t as-built

– 0.5 t corr

- t own

Areas which need to be renewed based on specific renewal criteria are, in general, to be

repaired with inserted material which is to have the same or greater grade/strength as theoriginal and to have a thickness, t repair

, not less than the Rule design thickness or: t repair

= t as-built

-

t own

(mm)

Where:

t as-built

: as built thickness, in mm

t own

: owner/builder specified additional wastage allowance, if applicable, in mm

t corr

: corrosion addition in mm


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Local strength criteria - Renewal thickness for local corrosion

PITTING

Pitting corrosion is defined as scattered corrosion spots/areas with local material reductions

which are greater than the general corrosion in the surrounding area