is.7595.3.1977

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IS 7595-3 (1977): General requirements for otter boards,

Part 3 Oval otter boards [TED 18: Inland, Harbour Crafts

and Fishing Vessels]

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( Reaffirmed 2002 )

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IS : 7595 Part III ) - 1977

ndian St andard

GENERAL REQUIREMENTS FOR (3TTER BOARDS

PART III OVAL OTTER BOARDS

Fishing Vessels Sectional Committee, MCPD 21

Chairman

Refiresent ing

SRR~ G. K. KURIYAN

Centgol smtitute of Fisheries Technology ( ICAR ),

Members

SRRI M. VELU Alternate

to

Shri G. K. Kuriyan )

SIIRI S W. ATRE

Kirloskar Cummins Ltd, Pune

SHRI A. N. GODBOLE ( Alternate )

SHRI S. B. CHANDORKAR

SHRI P. D. DHEKANE ( Alternate )

Kirloskar Oil Engines Ltd, Pune

SHRI A. R. CHOKSI

DEPUTY CHIEF SURVEYOR

Mazagon Dock Ltd, Bombay

Directorate General of Shipping (Ministry of

Shipping and Transport ), Bombay

ENQINEER AND SHIP SURVEYOR ( Alternate )

SHRI R. Y. GHANEKAR

Kirloskar Pneumatic Co Ltd, Pune

SHRI R. P. PARANJPE ( Alternate )

SHRI D. A. S. GNANADASS Ministry of Food and Agriculture (Department

SRRI K. HARISCHANDRA

SHRI M. JAYARAJ

SHRI

K. M. JOSEPH

SHRI R. A. KAMATH

SHRI P. L. D’ABREO ( Alternate )

SRRI R. S. NAKRA

of Agriculture ) -

The S. K. District Co-ooerative Fish Marketing

Federation Ltd, Mangalore

Directorate of Fisheries (Government of Karna-

taka ), Bangalore

Exploratory Fishery Project, Bombay

Kamath and D’Abreo, Cochin

SHRI P. B. GOVIL ( Alternate )

SHRI J. K. NANQIA

DR M. J. PRADHAN

Port Engineering Works (Andrew Yule and CO

Ltd

,

Howrah

Geeta Engineering Works Pvt Ltd, Bombay

Greaves Cotton & Co Ltd, Bombay

SHRI C R. KULASEKARAN ( Alternate 1

PRODUCTIONMANAGER

Andhra Pradesh Fisheries Corpn ( P ) Ltd,

Snar’M. G. RANE

Kakinada

Bharati Engineering Co, Bombay

Continued on page 2 )

@ Coprright 1977

INDIAN STANDARDS INSTITUTION

This publication is protected under the

Indian Copyright Act

XIV of 1957 ) and

reproduction in whole or in part by any means except with written permission of the

publisher shall be deemed to be an infringement of copyright under the said Act.

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IS : 7595 Part III ) - 1977

Continuedfrom page 1 )

Members

SHRI

H. S.

RAO

REPRESENT TIVES

SHRI

K.

SARKAR

Representing

Indian Register of Shipping, Bombay

Directorate of Fisheries ( Government of

Tamil Nadu ), Madras

The Peoples Engineering and Motor Works Ltd,

Howrah

SHRI B. BRATTACHARJEE (

Alternate )

SHRI M. SRANMUQAM

Brunton and Co Engineers Ltd, Cochin

SHRI G. SREENIVAS

Alternate )

SHRI H. K. SRARMA

Directorate General of Technical Development,

New Delhi

SHRI S K. GHOSH

Alternate )

SHRI D. D. SURYAWANSHI

Ruston & Hornsby ( India ) Ltd, Pune

SHRI S. V. SASTRY (

Alternate )

SRRI S. M. WAKNIS

Directorate of Fisheries Government of Maha-

rashtra ), Bombay

SHRI P. S. DAS,

Director General, IS1

Ex-ojicio Member )

Director ( MCPD ) (

Secretary )

2

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IS : 7595 Part III ) - 1977

ndian St andard

GENERAL REQUIREMENTS FOR OTTER BOARDS

PART III OVAL OTTER BOARDS

0 FOREWORD

0.1 This Indian Standard ( Part III ) was adopted by the Indian Standards

Institution on 29 July 1977, after the draft finalized by the Fishing

Vessels Sectional Committee had been approved by the Marine, Cargo

Movement and Packaging Division Council.

0.2 This Standard is Part III in the series on otter boards, Part I and

Part II cover general requirements of flat rectangular otter boards and

rectangular horizontally curved otter boards respectively.

1. SCOPE

1.1

This standard ( Part III ) deals with the materials and general require-

ments of oval otter boards.

2.

TERMINOLOGY

2.1 For the purpose of this standard,

the definitions given in IS : 7595

( Part I )-1975” shall apply.

3. MATERIALS

3.1 flame ofPart

Otter board

Bracket

Back strop

Material onforming to

IS

:

399-19637

IS: 2073-1970:

IS : 5537-1970s or

IS : 2266-197011

*General requirements for otter boards: Part I Flat rectangular otter boards.

tclassification of commerical timbers and their zonal distribution (

revised .

SSpecification for carbon steel black bars for production of machined parts for general

engineering purposes (first

fevision .

@pecification for lashing chains.

l/Specification for steel wire ropes for general engineering purposes (first

revision ,

3

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IS : 7595 Part III ) - 1977

Name of Part Material Conforming to

Kelly’s eye IS : 2073-1970”

Figure of 8-link

IS

:

2073-1970”

Sole ( shoe ) IS

:

5986-19707

Fittings IS : 5986-197Ot

Chain bridle IS : 5537-1970:.

4.

CONSTRUCTION

4.1 The constructional details of oval otter board complete with fittings are

shown in Fig. 1. The sides of the board shall be strengthened by mild steel

sheet and the bottom part shall be filled with cement and iron pieces.

4.2

For protection against corrosion, all metal parts shall be painted with

a paint conforming to IS : 1404-19704.

5. DIMENSIONS

5.1 The length and width of an otter board shall preferably be in a ratio

of 1.6 : 1.

5.2

Brackets

5.2.1 The fore bracket shall be fixed and the rear bracket shall be of

adjustable chain bridle, fixed at distances of 22.5 ~percent and 39 percent

of the total length of the otter board respectively from the fore and rear

edges of the board.

5.2.2 The brackets should be positioned at the symmetry axis of the

board and their apex should fall approximately at 40 percent of board

length from the fore edge.

5.3 Rings -

The fittings for rings on the outer side of the board for

connecting the back strop shall be approximately at 20 percent of the length

of the board from the rear edge of board.

*Specification for carbon steel black bars for production of machined parts for general

engineering purposes (&1 revisinn .

tspecification for hot-rolled steel plates and flats for cold-forming and flanging

operations.

Specification for lashing chains.

SSpecification for anti-corrosive paint, brushing, for ships’ bottoms and hulls, red,

chocolate or black, as required (~%st evision .

4

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As in the Original Standard, this Page is Intentionally Left Blank

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16 : 7595 Part 111) - i97i

5.4 Back Strop -

The length of the back strop and bridle shall be as

agreed to between the manufacturer and the purchaser (see Fig. 2 ).

5.5 Shear Angle - Shear angle for oval otter boards ranging between 30”

and 40” is considered most suitable.

BRlOLE WEIGHT

INDEPENDENT PIECE /

FIG.

2

CONNECTING RR NGEMENT F INDEPENDENTPIECE

WITH B CK STROP

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Base Units

Quantity

Length

Mass

Time

Electric current

Thermodynamic

temperature

Luminous intensity

Amount of substance

Supplementary Units

@an tify

Plane angle

Solid angle

Derived Units

Quantify

Force

Energy

Power

Flux

Flux density

Frequency

Electric conductance

Pressure, stress

Unit

metre

kilogram

second

ampere

kelvin

candela

mole

Unit

radian

steradian

Unit

newton

joule

watt

weber

tesla

hertz

siemens

Pascal

Symbol

m

kg

S

A

K

cd

mot

Symbol

rad

sr

Symbol

N

W

Wb

T

HZ

S

Pa

Conversion

1 N = 1 kg.1 m/s’

1 J = 1 N.m

1 W=lJ/s

1 Wb = 1 V.s

1 T = 1 Wb/m2

1 Hz =

1 c/s s-1)

1 S = 1 A/V

1 Pa = 1 N/m2

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is.7595.3.1977

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