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"Borderline" - 21m Offshore Work Catamaran

MK 06092
Kit Prices: AUD
Aluminium only: $
With windows / doors: $
Prices exclude transport.

Australian customers, please add 10% GST
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Designers Note:

This brand new vessel is for Dalmarine, a Western Australian offshore work boat company.
Dalmarine already have FOUR (3 x 10m and 1x15m see AIR RIDER category) of our AIR RIDER vessels, but this will be their first large catamaran with true offshore capability.
Just completed to a very high standard of finish in Thailand by Thai shipyard SEACREST Co, Ltd who have also built several GMD fast alumnium patrol vessels prior to this much larger project.


Vessel Specifications Metric Imperial
Overall Length 21.000 m 68' 10"
Waterline Length 19.900 m 65' 3"
Beam 8.000 m 26' 3"
Draft @ Working Displ. 1.700 m 5' 7"
Working Displacement 80+ Tonnes
Light Displacement 62 Tonnes
Deck height above Waterline 1.500 m 5'
Bow Freeboard at rest 2.900 m 9' 6"
Fuel Capacity 2 x 7,500 Litres
Engine/s Cat C32 "B" Rating
Total Installed Power 2 x 820 kW @ 2100 RPM 2 x 1,115 BHP @ 2100 RPM
Sprint Speed 26 Knots
Cruise Speed 21 Knots

Structure Metric Imperial
Bottom Plates 6 mm 1/4"
Side Plates 5 mm 3/16"
Main Deck Plates 6 mm 1/4"
Foredeck Plates 5 mm 3/16"
Superstructure Plating 4 mm 5/32"
Nominal Frame Spacing 700 mm 27-1/2"

Additional Information This vessel is engineered to a very high standard equivalent to "class". It is equiped with the best systems and equipment, designed and selected by our consultant design engineer Steve Tyler.
We have twin bow thrusters, Hamaan sewage treatment plant, RO desal system, Muir winches and caterpillar machinery.
Vessel Application Coastal and offshore aimed at the oil and gas industry. This vessel will do tasks ranging from crew transfers, to container movement, down to delivery or retrieval of components from the rigs.
It can carry in the order of 15 tonnes on the aft deck.

Aluminium Delivery Pack Dimensions Metric Imperial
Length 9.1m
Breadth 2.3m
Depth 2.0m PLUS
Delivery Pack Weight 32 Tonnes + 2 x 40' Containers

These specifications take precedence over the blueprints that are available for downloading. The manufacturer reserves the right to alter specifications without notice, some photos may show optional extras.

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