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MAR Proteus
The MAR ''Proteus''® is an experimental watercraft developed by Marine Advanced Research. The MAR ''Proteus'' is the first vessel of the ''wave adaptive modular vessel''-type. The vessel was developed by Ugo Conti. Because of its use of four legs connecting the superstructure to the outriggers, the ship has earned the nickname of "The Spider Ship" or "Spider Boat". The unusual design attracted public attention during early trials, before it even had a registration number.
==Construction==
The ''Proteus'' is similar in design to a catamaran, in that it uses a twin hull design and no keel. Unlike most catamarans however, the superstructure is not rigidly attached to the hulls. The ship uses titanium shock absorbers to travel with the waves in the ocean, rather than through them. This method should theoretically allow the ship to move faster through the water while burning less fuel, however sea trials are yet to be completed. Hogging and sagging should also be reduced as well.
The ''Proteus'' is long, while its beam is allowing for relatively normal initial stability coefficient of 2:1. Its draft fluctuates more than a traditional ship, but at half load it is at the bow and at the stern. Because of the ship's limited draft and inflatable hulls it is able to be beached without damage. The ship's bridge, cargo hold and berthing for four are located in the cabin that hangs down from the four legs. The cabin can be lowered into the water below and can run under its own power. It has been designed this way to allow offshore anchoring of the seadrive section of the craft, while allowing the cabin to be moored in a marina.
The ''Proteus'' is constructed of titanium, aluminum and reinforced fabrics. The ship's displacement is 12 tons when carrying its maximum cargo of 2 tons. Its outriggers store the 2,000 gallons of fuel that power the two Cummins Marine Diesel Quantum Series QSB5.9 355 horsepower engines at their sterns. 〔(''Proteus'' prototype characteristics )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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