flotation and buoyancy - fendercare drawings and picture references are for illustration purposes...

Flotation and Buoyancy

Mooring Buoys

Navigation Buoys

O�shore Buoys

Subsurface Buoys

Floating FendersFendering

solution to just about any buoyancy requirement

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Drawings and picture references are for illustration purposes only.

Flotation

We o�er a best-in-class solution to just about any surface or subsurface buoyancy requirement from customers throughout the world. If we cannot meet a requirement from our extensive range of o� the shelf products, we apply our experience and engineering expertise to design a new solution. In addition, with the recent acquisition of a leading �rm of naval architects, we have now added mooring system design to our bespoke product design capability.

Steel has been the material of choice for surface buoyancy applications for many decades and we still o�er steel buoys to those customers who prefer them.

However, for more than 20 years, there has been a shift away from the signi�cant capital and labour costs involved in building, deploying and maintaining steel products. The growing preference is for modern, lightweight, low-maintenance forms of plastic buoyancy.

Within the Fendercare Marine group of companies, we have two designers and manufacturers of plastic buoyancy, both serving a global customer base.

Australian Commercial Marine (ACM) has a long-established and market-leading range of mooring and navigational buoys manufactured from rotationally-moulded polyethylene. They have harnessed a unique “foam sandwich” variant of this technology, to o�er buoys with outstanding collision-absorption properties. Others may seek to emulate them, but there is only one genuine range of ACM buoys.

Hippo Marine is a world-renowned UK-based manufacturer of elastomer-type buoys, the same technology that they use in foam-�lled fendering solutions. This results in self-fendering surface buoys which are speci�cally designed to absorb impacts without either su�ering or causing damage, making them the preferred choice for o�shore operations. We can also introduce Kevlar™ reinforcement into the elastomer skin of the products to o�er outstanding durability for heavy-duty work.

We have also recently developed a subsurface buoyancy capability in a product line now being delivered to o�shore and governmental customers worldwide.

Our product range covers four main product areas:

mooring buoys

navigational buoys

o�shore surface buoys

subsurface �otation

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Flotation Mooring Buoys

Yacht Mooring Buoy

Hippo yacht mooring buoys are manufactured from a moulded core of closed cell foam covered in protective polyurethane elastomer. This makes them virtually unsinkable, even after su�ering severe damage.

The standard range of SB mooring buoys (SB1 – SB7) are recommended for fore and aft mooring systems.

The standard range of SB soft mooring buoys (SB1S – SB5S) are recommended for single buoy mooring systems. They are identical in construction to the SB

which allows greater impact absorption.

Product Ref. Diameter(mm)

Height (mm)

Weight (kg)

TotalBuoyancy (kg)

ChainCapacity (kg)

ChainSize (mm)

SB1A 610 915 15 240 180 19

SB1 610 610 11 150 114 19

SB2 610 460 9 110 85 19

SB3 610 305 7.5 75 50 19

The mooring system has a positive connection to the ground chain or sinker, which is similar to that used for commercial crafts

Pick-up buoy

Swivel

Box shackle

Galvanisingsteel top plate

Mooring buoy

Long link galvanised chain which goes through centre of buoy if riser chain is incorrect size

Joining shackle

Riser chain

Riser chain is terminated on top of the buoy which allows direct connection to mooring strop


Height (mm)

Weight (kg)

TotalBuoyancy (kg)

ChainCapacity (kg)

ChainSize (mm)

SB1S 675 645 16 204 157 19

SB2S 675 495 14 150 114 19

SB3S 675 340 10 110 85 19

Chain Size kg/metre11mm 3

13mm ½” 4

16mm 6

19mm ¾” 8

22mm 10

25mm 1” 13

An optional SB pick-up with a large loop handle can be attached. This makes the retrieval of the strop easy.

Mooring load formula H x 1.5 x kg/metre up to 2 Knots H x 2 x kg/metre 2 to 4 Knots Please ask above 4 Knots.

SB Soft Mooring Buoys

SB Mooring Buoys

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Seaclass Mooring Buoy

Construction MaterialRotationally moulded one piece seamless UV stable polyethylene construction with reserve buoyancy of closed cell polyurethane.

Buoy LifeCapable of 20 years plus.

MaintenanceVirtually maintenance and corrosion free, thanks to the properties of virgin polyethylene.

RangeCurrently 10 models utilising modular construction and independent tie bar system.

StrengthUnique foam sandwich moulding method provides incredible strength compared to weight. Load tested tie bars.

FriendlyDue to the lightweight construction method these buoys are considered ‘collision favourable’ compared to other construction materials such as steel.

AdaptableUnlike some other lightweight buoys, the ACM Seaclass range o�ers the ability to add or weld on other features, such as a navigation light pedestal, etc.

SEA5000

SEA4000

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Seaclass Mooring Buoy

Models:SEA 80SEA 170SEA 330SEA 1000SEA 2000SEA 3000SEA 4000SEA 5000SEA 6000

SEA 1000 and SEA 2000 modular mooring buoy con�gurations

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Commercial Mooring Buoy

Hippo Marine’s self-fendering commercial mooring buoys are in service with vessel and terminal operators worldwide – and used by everything from small RIBs up to cruise ships and supertankers.

Both types of buoy can be supplied in chain-through, pad-eye or handling cruci�x con�gurations and with integrated radar re�ectors. The cylindrical-type buoys can also, if required, be �tted with quick release hooks and lanterns.

The table below re�ects what we have designated as our standard ranges of chain-through buoys, but most of the buoys we supply are tailored in some way to suit a customer’s speci�c requirements.


BuoyancyUnit Height (mm)

TotalWeight (kg)

NettBuoyancy (kg)

MCMB-00300 1000 460 42 300

MCMB-00500 1260 460 55 500

MCMB-01000 1450 700 135 1000

MCMB-02000 1900 1050 500 2000

MCMB-03000 2200 1100 550 3000

MCMB-05000 2750 1200 1150 5000

MCMB-08000 3100 1480 1800 8000

MCMB-15000 3550 2050 3000 15000

MCMB-20000 4100 2100 4850 20000

MCMB-25000 4000 2500 4050 25000

Dia. Dia. Dia.

Height Height


BuoyancyUnit Height (mm)

TotalWeight (kg)

NettBuoyancy (kg)

MCBB-01000 1050 1500 225 1000

MCBB-02000 1250 2100 415 2000

MCBB-03000 1520 2100 575 3000

MCBB-05000 1650 2900 1100 5000

MCBB-08000 1970 3150 1400 8000

MCBB-15000 2400 4100 2550 15000

MCBB-20000 2700 4150 3200 20000

MCBB-25000 2750 5100 4350 25000

MCBB-30000 2750 5900 4700 30000

Barrel Buoys - Chain-through

Cylindrical Mooring Buoys - Chain-through

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Fabricated Steel Admiralty Pattern Mooring Buoy

Fabricated from 8mm steel plate and constructed with watertight compartments (2 for 5th and 6th Class and 4 for the remainder) each with a manway and drain plug. Admiralty pattern mooring buoys are �nished with rubber or timber fendering and life chains.

The central open hawse pipe, with reinforced collars at each end, allows for a large diameter riser chain to be lead through the buoy, ensuring all loads are transmitted directly to the mooring itself and not to the buoy.

Classi�cation Diameter Length Diameter of Hawse Pipe Reserve Buoyancy

Approximate Mass

mm ft & in mm ft & in mm ft & in kg kg6th Class 1140 3’9” 1830 6’0” 215 8½” 625 9255th Class 1220 4’0” 2130 7’0” 215 8½” 1500 10004th Class 1680 5’6” 2900 9’6” 305 1’0” 4250 19403rd Class 1980 6’6” 3510 11’6” 355 1’2” 6500 42902nd Class 2290 7’6” 4010 13’2” 460 1’6” 11500 49601st Class 2440 8’0” 4470 14’8” 460 1’6” 15000 5890

Fabricated collartop and bottom

Rubber fenders

Section through fabricated collar

Fabricated collartop and bottom

Rubber fenders

Section through fabricated collar

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Flotation Navigation Buoys

Tri Nav A1000 Buoy

Lightweight and dependable marks for a multitude of applications.

Construction MaterialRotationally moulded seamless UV stabilised virgin polyethylene.

Buoy LifeUp to 20 years.

MaintenanceVirtually maintenance free for life due to the nature of the manufacturing materials.

ValueVery cost e�ective due to low upfront outlay and virtually no maintenance expenses.

WeatherTri Nav buoys are currently withstanding cyclonic conditions in locations such as the Bass Straight and Northern Australia.

GraphicsTriangular top section provides 3 �at surfaces for attachment of graphics or signage.

Tri Nav A1000 Technical

Construction Rotationally moulded UV stabilised virgin polyethylene

Overall height A1000 – 1320mmMass 26.5kgBuoyancy 17kgFocal plane 1000mmDraft A1000 – 270mm

A1000

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Seaspar Meridian and Meridian Plus Buoy

Lightweight and dependable marks for a multitude of applications.

Construction MaterialRotationally moulded seamless UV stabilised polyethylene.


MaintenanceVirtually maintenance free for life due to the nature of the manufacturing materials.

FlexibilityAdaptable design enabling customised applications.

ScienceSoft riding performance suits scienti�c instruments/ data collection and telemetry delivery.

Re-deploymentAdjustable ballasting system of removable ballast plates means multiple locations for the same buoy.

ValueVery cost e�ective due to low upfront outlay and virtually no maintenance expenses.

WeatherMeridian buoys are currently withstanding cyclonic conditions in locations such as the Bass Straight and Northern Australia.

GraphicsTriangular top section provides three �at surfaces for graphics and signage.

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Seaspar Meridian and Meridian Plus Buoy

Seaspar Meridian and Meridian Plus Buoy TechnicalConstruction Rotationally moulded UV stabilised virgin polyethyleneColour All IALA approved colour combinations for cardinal and lateral navigation marksOverall Height Both models – 3562mm

Mass Meridian – 112kgMeridian Plus – 152kg

Buoyancy Meridian – 130kgMeridian Plus – 260kg

Focal Plane Both models – 2000mmDraft Both models – 1560mm

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Hippo Marker Buoy

Hippo o�ers a range of small, cost e�ective marker buoys for sheltered or shallow water locations. These are made of the same self-fendering materials as our range of larger navigational aids and are generally supplied with cost e�ective self-contained lanterns.


Overall Height (mm)

Total Weight (kg)

Focal Plane (mm)

Max ChainCapacity (kg)

Max ChainSize (mm)

MMB-0800 800 1200 45 935 150 19

MMB-1000 1000 1925 85 1170 140 25

MMB-1200 1200 1925 95 1190 225 25

MMB-1500 1500 1925 150 1190 350 25

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Guardian Navigation Buoy

Choice of IALA

marks

Self contained solar powered LED lantern

All IALA approved colour combinations

Safety handrail

Adjustable ballast

reserve buoyancy

Stainless steel lifting lugs

Anode for cathodic protection

Construction MaterialRotationally moulded UV stabilised polyethylene. Unique foam sandwich construction provides exceptionally high strength to weight ratio.


MaintenanceVirtually maintenance free for life due to manufacturing process.

ValueThe most cost e�ective due to low upfront outlay and virtually no maintenance expense.

WeatherGuardian buoys are currently withstanding cyclonic/hurricane conditions in locations such as the Bass Straight, Gulf of Mexico and Northern Australia.


ScienceSoft riding performance suits scienti�c instruments/data collection and telemetry delivery.

Re-deploymentAdjustable ballasting system means multiple locations for the same buoy.

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Guardian Navigation Buoy

Guardian Navigation Buoys TechnicalConstruction UV stabilised ‘foam sandwich’ polyethylene to average thickness (hull) 24mmColours All IALA approved colour combinations, colour fast for life of buoyDiameter All models – 1750mm / 69"

Focal plane height SB and EB – 2500mm / 98.5"EB H-V – 3300mm / 130"

Draft SB – 1350mm / 53"EB – 1650mm / 65"

Freeboard All models – 305mm / 12"

Mass (dry weight) varies with ballast SB – 545kg / 1201lbsEB – 590kg / 1300lbs

Reserve buoyancy Closed cell polyurethane 30kg/M2

EBWL

305 305

1350

2500 2500

3300

305

16501650

EBH-V

SB

SB Standard buoyancy EB Extra buoyancy EB H-V Extra buoyancy, high visibility

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Guardian 5000 Buoy

Construction MaterialRotationally moulded seamless UV stabilised virgin polyethylene and as choice of stainless steel or galvanised steel.


MaintenanceVirtually maintenance free for life due to manufacturing process.

ValueThe most cost e�ective due to low upfront outlay and virtually no maintenance expense.

WeatherBuilt to withstand cyclonic/hurricane conditions in locations such as, the Bass Straight, Gulf of Mexico and Northern Australia.


ScienceSoft riding performance suits scienti�c instruments/data collection and telemetry delivery.

Re-deploymentAdjustable ballasting system means multiple locations for the same buoy.

Choice of IALA

Self contained solar powered LED lantern

Stainless steel lifting lugs

All IALA approved colour combinations

Adjustable ballast

reserve buoyancy

2 x Heavy duty anodes for corrosion protection

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Internal (or external)

Aluminium access ladder

Mid frame(Galv. or S/S)

Lifting lugs

Internal web frame (Galv. or S/S) joins bothbuoyancy modules

Ballast weights

M24 Grade 8.8 galv bolts

Access hatch foraccessories, etc.

850

2400

2500

1200100NB Sch40

Pipe

400

Boardinggrab rail

Ø152 Aluminiuminternal support

Foca

l Pla

ne 5

300

to 6

000

Buoy top adaptor

Personnel safety restraint

Elevation

Guardian 5000 TechnicalConstruction UV stabilised ‘foam sandwich’ polyethylene to average thickness (hull) 24mmColours All IALA approved colour combinations for Cardinal and Lateral navigation marksDiameter 2500Focal plane height 5300-6000Draft 2400Freeboard 400Mass (dry weight) varies with ballast Approximately 1100kgReserve buoyancy Closed cell polyurethane

Guardian 5000 Buoy

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Hippo Seamless Buoy

Con�gured for use with new-generation self-contained lanterns, the Seamless range o�ers the same self-fendering construction as other Hippo buoys but at lower price levels due to the single-piece construction, the simpli�ed superstructure and the optimisation for shipping.

Container Buoy Seamless Navigation Buoy

Seamless1.2

Seamless1.6

Seamless1.8

Seamless2.0

Seamless2.1

Seamless2.4

Diameter (mm) 1200 1600 1800 2000 2075 2400

Draught (mm) 760-925 800-900 750-950 725-925 1160-1400 1125-1400

Freeboard (with no moorings attached) (mm) 465 450 470 500 640 675

Freeboard (with 200kg moorings attached) (mm) 288 300 300 300 400 400

Focal plane (when lit) (mm) 1645-1855 1640-1850 2100-2200 2140-2340 2950-3190 2950-3225

Displacement (kg/cm) 11.3 20.1 25.4 31.4 33.8 45.3

Approximate weight (kg) 200 350 400 500 1300 1550

Maximum mooring weight (kg) 200 350 500 600 900 1200

Recommended chain size (mm) 19-28 19-32 19-32 19-32 32-38 32-38

Recommended sinker (cast iron) (kg) 750 1000 1000 1250 2500 2500

Recommended operational conditions

minor channels and harbours




major channels and open sea

major channels and open sea



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General Speci�cations 2.1m Container and 2.4m Flatrack Seamless BuoysThese two larger members of the Seamless family have been designed for long-distance transportation at minimum cost

Hull • Both hull and skirt incorporated in a one-piece construction

Daymark / Superstructure • Lightweight composite structure• Built in ladder on 2 sides• Powder coated aluminium daymarks where required• Safety Hoop• Mounting plate to take a variety of self-contained LED lantern types

Steel Skirt / Lifting Con�guration • Skirt arrangement• Supplied with bridle mooring eyes• Supplied with 2x lifting eyes• Hot dip galvanised mild steel• Supplied with replaceable mooring eye wearing bushes

Options • Echomax EM305 radar re�ector• Powder coated aluminium plate type topmark assembly• Fully light stable aliphatic elastomer coating• Anti-bacterial coating to reduce marine growth• Adjustable ballast to suit shallow water or lightweight mooring systems

General Speci�cations 1.2m, 1.6m, 1.8m and 2.0m Seamless Buoy

Hull / Daymark • Both hull and daymark incorporated in a one-piece construction

Steelspine • One-piece construction integrated into the buoy design• Ba�e tail con�guration complete with forklift slots to aid quayside handling• Supplied with both bridle and single point mooring eyes• Supplied with 2x lifting eyes• Supplied with �ange to take a variety of self-contained LED lantern types• Hot dip galvanised mild steel• Supplied with replaceable mooring eye wearing bushes

Options • Echomax EM180 radar re�ector• Powder coated aluminium plate type topmark assembly• Fully light stable aliphatic elastomer coating• Anti-bacterial coating to reduce marine growth

Common Speci�cations

Hull Manufactured from a core of thermolaminated closed-cell polyethylene foam encapsulated in a self-colour tough yet �exible polyurethane elastomer skin. The hulls of these buoys are lightweight and self-fendering, yet extremely durable and virtually unsinkable. They come as standard with a non-slip deck.

Light System Con�gured to take a variety of self-contained LED light systems.

Hippo Seamless Buoy

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Top mark

Top mark support

Lantern

Safety ring

Solar panels

Tower

Daymarks

Battery box

Lifting eye

Hull

Mooring eye

Skail

Mooring eye

Tail option

Ballast weight

Mooring eye

Freeboard

Draught

Hippo Lite and Super Lite Buoy

Whether con�gured as navigational marks in accordance with IALA guidelines or �tted out as databuoys, the largest buoys in the Hippo family o�er outstanding durability and stability and are in service in some of the most challenging environments on the planet.

These buoys are fully modular and the superstructure is engineered to both minimise windage and to accept large equipment packages.

The �exibility of our technology allows us to adopt a ‘blank page’ approach with users who are looking to achieve a step change in the e�ciency of their buoy operations or to incorporate very speci�c design features.

Table of dimensions overleaf.

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Hippo-Lite/1.5 Hippo-Lite/1.8Diameter 1500mm 1800mmDraught 1000mm 1100mmFreeboard 200mm 300mmFocal plane (when lit) 2300mm 2400mmDisplacement 17kg/cm 25kg/cmWeight (without ballast) 540kg 650kgRecommended moorings 19/25/32mm

max weight: 160kg25/32mm

max weight: 350kgSinker (cast iron) 1000kg 1000kgRecommended operation minor channels and harbours major channels and part open sea

Hippo-Lite/2.0 Hippo Super-Lite/1.8Diameter 2000mm 2200mmDraught 1200mm 2500mmFreeboard 400mm 500mmFocal plane (when lit) 2500mm 3000mmDisplacement 31kg/cm 38kg/cmWeight (without ballast) 750kg 1400kgRecommended moorings 25/32mm

max weight: 930kg32mm

max weight: 1000kgSinker (cast iron) 1500 kg 2500kgRecommended operation major channels and part open sea major channels and open sea

Hippo-Lite/2.5 Hippo Super-Lite/3.0Diameter 2500mm 3000mmDraught 2500mm 2500mmFreeboard 500mm 500mmFocal plane (when lit) 3000mm 3000mmDisplacement 49kg/cm 71kg/cmWeight (without ballast) 1450kg 1600kgRecommended moorings 32mm

max weight: 1400kg32mm

max weight: 2400kgSinker (cast iron) 2500kg 2500kgRecommended operation major channels and part open sea major channels and open sea

Hippo Lite and Super-Lite Buoy

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10.5m Minor Light Tower

10.5m Minor Light Tower

Hippo GRP Minor Light Towers

Tower Reference Height (m)MLT 5.5 5.5MLT 7.0 7.0MLT 8.5 8.5MLT 10.0 10.0MLT 13.0 13.2MLT 15.0 15.0

Hippo Marine manufacture a range of Minor Light Towers that are constructed using modular sections to enable easy transportation to and erection at remote locations.

These towers have the following features:

Hippo Marine’s GRP towers are of modular construction manufactured with a UV stabilised isophthalic gelcoat and resin, at a minimum thickness of 8mm, requiring little maintenance

A range of tower heights available up to 15m

The towers are locally reinforced by way of the �anges to produce a design of immense strength, allowing them to withstand gale force winds

Access to the door section is via an external ladder. The ladder is removable to minimise theft or vandalism. Access to the lantern is via an internal ladder at the top. The top platform is �tted with guard rails to enable safe access to the lantern for maintenance purposes

The towers can be �tted with stainless steel frames to support solar panels

Each tower is supplied complete with lifting davit kit for on-site assembly

The batteries can be stowed either at door level or at ground level within the cone section

Colours are in accordance with IALA marking standards

Towers have been certi�ed to withstand winds of up to 56 metres per second (125mph)

A comprehensive range of lighting systems are available

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Flotation

Chain Support Buoy

Our standard range of chain support buoys goes from a reserve buoyancy of 900kg up to 5500kg – but our

products to suit our customers’ exact buoyancy requirements. We can supply these buoys con gured with swivel eyes top and bottom or with a chain-through/locking plate arrangement. We also o�er pick-up buoys with up to 750kg of reserve buoyancy.

Swivel-ended type Chain-th rough type

Three chain stop options

Table of dimensions overleaf.

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Flotation

Type

Nominal DimensionsNominalWeight

(kg)

NettBuoyancy

(kg)

NettBuoyancy

(lbs)

A Float Len

(mm)

B Overall Len

(mm)

C Float Dia.

(mm)HCSB-0900 1500 2120 1020 210 900 1980HCSB-1815 1500 2120 1350 285 1815 3993HCSB-2000 2000 2620 1250 330 2000 4400HCSB-2270 2000 2620 1310 340 2270 4994HCSB-2500 2000 2620 1370 355 2500 5500HCSB-2750 2000 2620 1430 365 2750 6050HCSB-3000 2000 2620 1485 375 3000 6600HCSB-3630 2000 2620 1620 415 3630 7986HCSB-4540 2000 2620 1810 485 4540 9988HCSB-5454 2000 2620 1980 550 5454 11999

Type


(kg)

NettBuoyancy

(kg)

NettBuoyancy

(lbs)

A Float Len

(mm)

B Overall Len

(mm)

C Float Dia.

(mm)HCSBT-1360 1550 2096 1300 440 1360 2992HCSBT-1815 2000 2546 1300 480 1815 3993HCSBT-2000 2000 2546 1340 520 2000 4400HCSBT-2270 2000 2546 1400 535 2270 4994HCSBT-2500 2000 2546 1450 550 2500 5500HCSBT-2750 2000 2546 1520 585 2750 6050HCSBT-3000 2000 2546 1590 600 3000 6600HCSBT-3630 2000 2546 1705 630 3630 7986HCSBT-4540 2100 2646 1850 750 4540 9988HCSBT-5400 2350 2890 1950 800 5400 11880

Type


(kg)

NettBuoyancy

(kg)

NettBuoyancy

(lbs)

A Float Len

(mm)

B Overall Len

(mm)

C Float Dia.

(mm)HPU-0100 660 860 660 25 100 220HPU-0250 850 1460 880 70 250 550HPU-0300 910 1514 940 80 300 660HPU-0400 990 1580 1020 100 400 880HPU-0500 1017 1620 1050 95 500 1100HPU-0750 1190 1794 1220 130 750 1650

Swivel-ended Type Buoy

Pick-up Buoy

Chain-through Type Buoy

Chain Support Buoy

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Flotation

Anchor Pendant Buoy

Whether con�gured as traditional suitcase-type with handling cruci�x and pad-eye, as a single-piece barrel buoy, as a modular stacking buoy or as a modular donut-type unit con�gured for through-wire use, Hippo anchor buoys are in service in some of the most demanding environments which the o�shore sector has to o�er.

Kevlar™ reinforcement can be �tted for heavy-duty applications and other variants of these products (such as the pictured ice con�guration) can be quoted upon customer request.


Buoyancy Unit Height (mm)

Overall Height (mm)

TotalWeight (kg)

NettBuoyancy (kg)

APBB-01000 1050 1500 1500 225 1000

APBB-05000 1650 2900 2900 1100 5000

APBB-10000 2100 3500 3500 1700 10000

APBB-20000 2700 4150 4150 3200 20000

APBB-30000 2750 5900 5900 4700 30000

Barrel Type Pendant Buoys

Product Ref. Width(mm)

Depth(mm)

Overall Height (mm)

TotalWeight (kg)

NettBuoyancy (kg)

APB-01000 1300 1100 1950 310 1000

ABP-02000 1520 1320 2200 470 2000

APB-03000 1800 1600 2200 550 3000

APB-04000 2100 1760 2200 630 4000

APB-05000 2000 1600 3245 1080 5000

APB-10000 2300 2030 3900 1800 10000

APB-20000 3200 2500 4350 3200 20000

“Suitcase”/Rectangular Pendant Buoys

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Flotation


Overall Length(mm)

No. ofModules

TotalWeight (kg)

NettBuoyancy (kg)

APMD-05000 1900 2830 2 1750 5000

APMD-10000 2350 3450 2 2690 10000

APMD-15000 2475 4600 2 3840 15000

Modular Donut Type Anchor Buoy

Product Ref. Width(mm)

Depth(mm)

Overall Height (mm)

TotalWeight (kg)

NettBuoyancy (kg)

APBM-30000 2500 2500 7800 6000 30000

APBM-45000 3150 3150 7800 7200 45000

APBM-54000 3280 3280 8100 8000 54000

Modular Stacking Pendant Buoy

Anchor Pendant Buoy

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Flotation

Besides the ranges of commonly-requested buoys listed within this section, we also design and manufacture a complete range of �oats for hoses, pipes, ropes and many other applications.

For rope use, we have single and double hawser designs, all manufactured from the same combination of extremely durable, high-visibility, self-fendering materials as our ranges of buoys and fenders. These can easily be tailored to guarantee a speci�c amount of buoyancy.

Within the hose market, we are able to o�er �oating Y-pieces and reducers in either standard or bespoke con�gurations. We also design and supply hose �oats.

For pipeline installation work, we o�er pipelaying �otation modules, more details of which can be found in the subsurface buoyancy section of this publication.

And in response to an FPSO operator o� West Africa who brought us the problem of his o�oading hose getting damaged when coming into contact with riser chain, we developed a moulded protection system which we are now supplying to others looking to minimise hose casualties and related downtime.

Floating Y-piece

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Flotation Subsurface Buoys

The MaterialsAs with surface buoyancy, there are two application dependent material parameters to subsurface buoyancy:

the foam material which forms the core of the product

the external coating material

Based upon the use our products are being put to and the depths to which they need to be rated, we select from a number of possible material combinations to ensure maximum product life and integrity at minimum cost.

FoamsFor shallower depths, we are typically o�ering either high-density polyethylene foam or expanded polymer foam. The signi�cant bene�t both these foams o�er over the polyurethane foam, which most other manufacturers will o�er for these depths, is that the foams we o�er are of a closed cell nature. This means that if the outer skin of a Hippo shallow water buoy is breached, our customers can be assured that the result will not be a rapid and catastrophic absorption of water followed by failure of the product.

For deepwater applications, we are formulating and processing our own pure syntactic foam into which we will then generally introduce moulded macrospheres to reduce the weight and the ultimate cost of the product.

Subsurface Flotation Materials Overview

External CoatingsThere are 3 main material possibilities for encapsulating the core of Hippo subsurface buoys:

polyurethane elastomer is a highly abrasion-resistant, reinforceable coating which we can either spray-apply or cast around the foam core. For ultimate durability, this form of coating can be Kevlar™ reinforced

rotationally-moulded polyethylene is a cheaper and more uniform method of mass-producing a protective shell for the foam core in applications where the resilience and �exibility of PU elastomer is not required

PU paint is mainly used in applications where the core material is resilient in itself but requires some level of protection from UV degradation

ApplicationsThe primary product applications for these materials are:

pipeline installation buoys

Modsyn™ top-up buoys, general subsea installation buoys

transponder collars

modular subsea buoys

distributed buoyancy modules

submersible/ROV/AUV buoyancy systems

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Pipeline Installation Buoy

Proven o�shore technology, in which you can trust.

To reduce tensions on both vessel and pipeline during installation, buoyancy modules are very often �tted. This can happen either on the laying vessel itself or on land if the shore pull system is being used.

Our commitment is to design, manufacture and supply the best possible solution for your pipelaying buoyancy requirements, using durable materials that can be taken onto future projects, and which will require very little maintenance either during or between projects.

The main features and bene�ts of Hippo Marine’s unique approach to this application are as follows:

easily and cost e�ectively customised to suit speci�c project requirements

extremely durable outer polyurethane elastomer skin

kevlar-type skin reinforcement available as an option

various foam densities available depending upon the depth requirement

some exclusive foams available of closed-cell nature to eliminate risk of loss of buoyancy due to damage to the module

modules designed to accommodate your preferred attachment and release system

base designed to �t multiple di�erent pipe sizes

one-piece or multi-module systems available

8mm elastomer skin reinforcedwith nylon mesh.

PIPE

75kg foam

762mm (30")

7

304.8mm (12")3

PIPE

R55

R55

304

R85

390

1515

1504005 150

86

700

R85R8

R20

17°R1

52

20

532

780

PIPE

55kg/cu.M foam5mm elastomer skin

Optional 3x grooves100mm wide x 10mm deep

R500

260

1080

1610

275 530 530

1150

540

96°

R200

R50

540

75-100kg/cu.M foam

8mm elastomer skinreinforced with nylon mesh.

PIPE

4x grooves 100mm wide x 5mm deep with bonded 80mm wide x 0.9mm thick 316 stainless steel.tt

R200

350

1090

2400

480 480 480 480

1200

545

30°

115°

224

321

R200

R60

545

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8mm elastomer skin reinforcedwith nylon mesh.

PIPE

2 x grooves 100mm wide x 5mm deepwith bonded 80mm

ggwide x 0.9mm thick

pp

316 stainless steel.tt

75kg foam

762mm (30")

7

304.8mm (12")3

PIPE

R55

R55

304

R85

950

390

1515

1504005 150

86

700

R85R8

R2017°

R152

20

532

780

PIPE

55kg/cu.M foam5mm elastomer skin

Optional 3x grooves100mm wide x 10mm deep

R500

260

1080

1610

275 530 530

1150

540

96°

R200

R50

540

4x grooves 100mm wide x 5mm deep with bonded 80mm wide x 0.9mm thick 316 stainless steel.tt

R200

350

1090

1200

545

321

R200

545

Pipeline Installation Buoys

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Modsyn™ Top-up Buoys, General Subsea Installation Buoy

Manufactured from the same syntactic foam formulations as our ranges of larger subsea buoys, Modsyn is the perfect solution when small, con�gurable amounts of buoyancy are required for cable or umbilical support, as ROV trim buoyancy or as a general-purpose installation tool.

Modsyn does o�er a number of operational advantages over alternative products available on the market:

easily lashed via the central through-hole

multiple units can be con�gured together via two other lateral through-holes

�at-sided for easy storage on land and easy use on deck.

Product Ref Depth Rating(m)

Nett Buoyancy (kg)

Total Weight (kg)

Number OfModules

Diameter (mm)

Height(mm)

MODSYN-S1-0250 250 39 24 1 500 410

MODSYN-S1-0500 500 38 25 1 500 410

MODSYN-S1-1000 1000 36 27 1 500 410

MODSYN-S1-2000 2000 29 34 1 500 410

MODSYN-S1-3000 3000 23 40 1 500 410

MODSYN-S2-0250 250 70 52 2 500 820

MODSYN-S2-0500 500 68 54 2 500 820

MODSYN-S2-1000 1000 64 58 2 500 820

MODSYN-S2-2000 2000 50 72 2 500 820

MODSYN-S2-3000 3000 38 84 2 500 820

MODSYN-S3-0250 250 105 78 3 500 1230

MODSYN-S3-0500 500 102 81 3 500 1230

MODSYN-S3-1000 1000 96 87 3 500 1230

MODSYN-S3-2000 2000 75 108 3 500 1230

MODSYN-S3-3000 3000 57 126 3 500 1230

Modsyn General Purpose Installation Buoy

Modsyn General Purpose Installation BuoyWe are also able to produce general purpose subsea installation buoys to customer requirements, as in this example of a lashed-on design favoured by one of our customers.

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Modular Subsea BuoyWherever there is a requirement to safely moor a �oating o�shore structure, it is highly likely that the mooring system will comprise one or more subsea mooring buoys.

The principle of these buoys is that the �otation modules are mounted onto a through-member made of steel. This steelwork, con�gured and rated in accordance with customer requirements, integrates structurally within the rest of the mooring system, leaving the �otation units unstressed.

The nature of these modular buoys is that the number of modules can be adjusted to meet a speci�c buoyancy requirement and also that any damaged module can be replaced in isolation.

This range of buoys o�ers net buoyancy from 500kg to 20t, at depth ratings from 250m down to 3000m. Bespoke buoys can also be manufactured in larger or smaller sizes.

The matrix showing all possible combinations of modules, depth ratings and resulting net buoyancies would be massive. Below you will �nd line drawings of the mini, standard, large and maxi ranges. Tell us how much buoyancy you will require, and to what depth it needs to be rated, and we will quote you the most cost e�ective way to meet that requirement from amongst these options.

Large / Maxi Modular Buoy

Standard Modular Buoy

Mini Modular Buoy

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Our combination of subsea materials technology and processes allows us to design and supply products for many other subsurface applications.

These can be as simple as the pictured transponder collar. However, the projects we get involved in can also be as detailed as the consulting, design and manufacturing we were engaged to perform for the most complex sets of submersible buoyancy ever produced, also pictured.

Other areas to which we are applying, or have applied our expertise, include combined jumper/umbilical �otation and protection and distributed/riser buoyancy.

For the vast majority of work of this type, there are no speci�cation tables which we can provide to arrange standard data into a neat format. This is all about our customers bringing us their subsea design and operational challenges and working with us to develop a technically robust and cost e�ective solution to those challenges – in which respect we act as an extension of their own engineering capabilities.

So the service which we are proposing here is the application of our materials, our experience and our expertise to assist our customers in �nding the best possible outcomes to their subsea headaches. We welcome such headaches, and the opportunity to show our customers how we can solve them for you.

Other Subsurface Flotation

flotation and buoyancy - fendercare drawings and picture references are for illustration purposes...

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