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The reference load used in the design and testing of the towing winch is twice the static bollard pull. Even if AHTS-vessels are customized for anchor-handling and towing, they can also undertake, for example, ROV (remotely operated underwater vehicle) services, safety/rescue services, and supply duties between mainland and offshore installations.
The combined port anchor windlass and winch of the modern ferry Stena Britannica. The hydraulically operated brake and pawl allows the anchor to be dropped from the ship's bridge. [citation needed] A windlass is a machine used on ships that is used to let-out and heave-up equipment such as a ship's anchor or a fishing trawl. On some ships, it ...
In offshore applications, huge lengths of rope are often housed on drums. The anchor winches on Saipem's Semac 1 pipe laying barge, for example, each hold 2,800 metres of 76mm (3 inch) diameter wire rope in 14 layers. Saipem's Castorone, the world's largest pipe laying vessel uses a wire rope that is 3,850m long and 152mm in diameter. It weighs ...
At 1:30 a.m. the vessel spun its two anchor lines in seven meters (23 ft) of water, but the anchor failed and the ship drifted towards the coast at a speed of 1.5 knots (2.8 km/h; 1.7 mph). At 1:37 a.m., CROSS informed the ship's captain that, given the bad weather, the Lorient tugboat could not intervene, and that in the meantime he would have ...
The Bristol 40 is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, or an optional cutter or yawl rig, all with aluminum spars. It features a spooned raked stem , a raised counter reverse transom , a keel-mounted rudder controlled by an Edson wheel and a fixed modified long keel , with a ...
Warp: anchor line, traditionally made of stiff natural fibre such as hemp, today of stronger, lighter, synthetic fibres such as laid nylon, prized for its elasticity in absorbing shock loads on an anchor. Winch: a geared device providing both friction and mechanical advantage in sail trimming, hoisting large sails, and retrieving an anchor ...
The winch consists of a gas-powered engine, spool, rope, frame, and sometimes a simple transmission. The person being towed walks (or swims) away from the winch, while extending the rope. When the winch is engaged, it pulls the boarder in at a speed ranging from 25 to 40 kilometres per hour (16 to 25 mph).
She was 149 feet 6 inches (45.57 m) in overall length, with a beam of 40 feet (12 m), and a full-load draft of 20 feet 3 inches (6.17 m). Her gross registered tonnage was 173, and her net registered tonnage was 117. [7] Under international rules, her gross tonnage was 930, and her net 279. [8] Sea Victory's aft deck showing towing winch