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8.5M Landing CraftGA plan above

Power/Fuel Curves

Interior photo


Packing container

Ready for shipping





8.8 Aluminium Landing Craft Design

The team at Sea Speed Design are proud to announce the successful sea trials of our two new 8.8metre landing craft design ‘Loggerhead and Leatherback’.   See Video

28' Lanfing Craft8.5M Landing Craft

‘Loggerhead and Leatherback’ (named after offshore turtles in the region they will be servicing) are newly designed, safe and cost effective passenger tour vessels. These aluminium crafts will operate out of Hamilton Island, on the Great Barrier Reef on days trips to White Haven Beach and various other charter operations.

The design of these heavy duty, aluminium plate barge models is approved by the Australian commercial vessel standards, NSCV Class 1D. These are the third and fourth landing crafts of this series, produced by SeaCat Ships and are the latest stylized version, with the capacity to hold 32 passengers, cushion seating, plus two round centre seats, which are easily converted into raised dining tables. The vessels are powered by twin 140 h.p. Suzuki 4 Stroke Outboard engines, giving a fully loaded top speed of 25 knots.

The vessels have now been disassembled to fit into a 40 foot container for shipping. The vessels designs are available in Kit form to allow for ease in construction and in this case the builders and Owners were extremely happy with the project and their new, high performance craft.

Principal Dimensions

Hull Dimensions                                                                      

Length  (overall)             8.55M  Metres

Length (waterline)          7.46M Metres (NSCV)

Beam                               3.50 Metres

Depth                              1.43 Metres

Draft                                400  MM (loaded)


Engines:                2 of Suzuki 4 stroke outboard (140h.p.)

                              25” long shaft with Tacho, key start and standard instruments.


Lightship speed        (approx)                 30knots   (restricted to 24.9 knots operation)

Loaded speed            (approx)                 24 knots      (typical load 2.5 tonne)

Loiter speed               (approx)                  8 knots

 Tank Capacities

Fuel                           (Seperate)                      2 of 200 ltr


The vessels are constructed and fitted out in accordance with the requirements of the NSCV code rules for an aluminium passenger vessel and good boat building practice. The vessel shall be capable of withstanding wind and wave forces of open seas when fully loaded. A certificate of commercial registration shall be issued for NSCV code class 1D from the AMSA. (32 persons including crew)

Structural Scantlings

Hull bottom plate                    6 mm plate

Hull side plate                         4 mm plate

Deckhouse plate                       4 mm plate

Deck plate                                4 mm plate


All hull and deckhouse structure shall be of marine grade aluminium.

Canopy: Fabricated aluminium tube canopy with fabric (sumbrella) cover

Console:Fabricated aluminium console (buffed aluminium) with electronic’s, battery gauges, dc switchboard, and  compass fitted above with room for the engine instruments.   Electrical switching and controls under.

Bow Door:Fabricated aluminium heavy duty door with four hinge points and rubber seals with watertight retainer. Warne Vantage 2000 winch with 6 mm wire rope starboard side and stainless steel locking devise port.

 Deck Coverings

Main cabin                               Designer Flake

 Internal Bulkhead Linings       

Bulwarks below windows                             Painted

 Deck Head Finish

Main cabin                                                  Aluminium tube with Sumbrella.


Inspection hatches to be provided of watertight standard to all compartments. These shall be 25mm plate machined pieces with tapped holes for ease in removal.

 Ground Gear

Ground gear:    1 X 15 KG SHHP Anchor with 3 Metres of  8mm short link chain and 58 Metres of 10mm Nylon Rope.  Mooring Gear:   3 x Inflatable Fenders fitted with 16mm ropes, 3 of 16mm Mooring Ropes.


Fendering: heavy duty aluminium tube to gunnel (buffed aluminium) pipe to be fitted around the perimeter at the hull plus main deck height.  

Paint System

Paint system:  the paint system shall be of high standard marine type paint (Jotun). The paint system shall be two pack high build epoxy undercoat with two pack polyurethane finish in order to avoid operational damages and extend the overall vessel life.  All aluminium is to be cleaned and degreased. The first coat of paint system to be applied within 8 hours. Hull underwater to be coated with (Jotun) anti-fouling system suitable for area of operation.

Hull topsides:  To be Vinyl Wrap 3M type with colour printing artwork (Purchaser to supply artwork)

Console: To be coated with Vinyl Wrap 3M type.

Decks: Exterior decks to be coated with ‘Designer Flake’ to the manufacturer’s specifications.

Interiors:  Exposed structure below window sills, to be coated with two-pack paint system (Jotun) to the manufacturer’s specifications.

Vessel's name and insignia shall be applied to the port and starboard and also on the transom with the port of registry.

Draft marks shall to be painted on bow and stern. The vessel’s number shall be center punched on the hull in way of a bulkhead.

Antifowl shall to be Jotun type.


Bollards:  Six of fabricated aluminium bollards to be provided suitably arranged to enable safe berthing.

Hand Rails

Handrails:  38 mm aluminium tube hand rails to be provided in way of all passenger space. Rails at not less than 230 mm longitudinal spacing with the lowest handrail course to be not less than 230mm.

 Rail heights shall be in accordance with the requirement with the NSCV code.

Passenger Seating

Seating arrangement shall be provided in accordance with the general arrangement plan.  Helm Seat to be fabricated aluminium with cushions (Sumbrella type) Exterior seating to be aluminium bench seat style (folding with legs and clips) with Sumbrella cushions.  Easy lock seats/table from the centre so they can be removed if required 

Helm & Electronic Equipment

Electronics (Helm)  1 x Garman 4G, Radar, 1 x ICOM IC-M304 VHF Marine Radio with Banten Antenna, 1 x Ritchie 76mm Compass.  The helm console shall include all engine instrumentation. Eg: voltmeter, tachometer, oil and temperature gauges,etc.

Safety Equipment List  

2 x 20 Man Karly Floats (On Roof)

35 x Coastal Life Jackets

 1 x dry chemical fire extinguisher (5.5 Ltr)

 1 x Portable horn 

 Pyros’ (3 x parachute, 2 red/1 orange hand held) in box

 1 x First Aid Kit (Scale G)

1 x Life buoy with light

1 fire bucket

2 x torch

1 x boat hook

Bilge Pumping Arrangement

Bilge pumping system: arrangement shall be in accordance with the NSCV code requirements.  Bilge Arrangement     2 x Manual Bilge Pumps (Whale Gusher, double acting) fitted with flexible hoses, 6 x Voids, each void contains a spin-out inspection port and fixed bilge suction/sounding with cam lock fittings.

Fuel System  

Fuel tanks: two (2) of 200 ltr seperate fuel tanks to be installed above deck. The tanks shall be fully welded marine grade aluminium with aluminium fittings. (Filler pipe, inspection manhole ports, vents, etc). Fuel oil filter assembly or equivalent shall be provided.

Steering System

Steering and Control System:   Throttle and Trim controls, Sea Star steering system including talon wheel and fuel system.


Batteries: Three (3) of 12volt 200ah lead acid batteries are to be supplied. Two (2) for main engines plus house bank plus one (1) of 12 volt 100ah for winch battery. The batteries are to be secured in acid proof boxes. All boxes are to be properly vented. All battery leads shall be 20 rubber insulated welding cable with disconnect switches. The start lead cables shall be run as direct as possible.

Electrical System

All cables shall be in accordance with the requirements of the Australian Standard 1695, or equivalent, and to be sheathed and fixed with formed clips and screws, cable ties and table trays as required. All cable runs shall be enclosed in oil tight flexible conduit or equivalent mechanical protection used where applicable. All a/c cables must comply with v 75 degree Celsius or better temperature rating. 

The system supplied and extent of wiring shall be as listed below.

Vessel completely wired with marine grade wire and fittings, 3 x 200 AH batteries fitted in battery boxes enclosed in aluminium compartments with DC Switch Board,  breakers and switches,  All  round white navigation Light, 1 x  Spotlight. 

PA and Music: True marine 7" 260 watt speaker 2 pair, MS-UD650 True Marine Media Player / Receiver - With FUSION -  Link Bluetooth build In, Color Display, 3 Zone speaker, 1 Unit MISC Wireless microphone and receiver (Shure BLX4R with SM58 Mic) 1 Item MISC Extension antenna for above. Switches and circuit breakers shall be compatible with the circuit loading specified and approved by the electrician. Suitable cathodic hull protection devices shall be used as required.The main switching is at the helm console.







Contact Information

Sea Speed Pty Ltd. P.O. BOX 773 Aspley 4034, Brisbane Australia

Phone Int 668 04406355



































Contact Information

Sea Speed Pty Ltd.

P.O. BOX 773 Aspley 4034, Brisbane Australia

Phone +61 7 3862 9988

Fax +61 7 3862 9488

Mobile Paul 0417 770 769

Email SeaSpeedDesign
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