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Bollard pull is a conventional measure of the pulling (or towing) power of a watercraft.It is defined as the force (usually in tonnes-force or kilonewtons (kN)) exerted by a vessel under full power, on a shore-mounted bollard through a tow-line, commonly measured in a practical test (but sometimes simulated) under test conditions that include calm water, no tide, level trim, and sufficient ...
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 ...
The same type of "weigh bar" can be used to measure horizontal loads and "drawbar pull" of wheeled/tracked or vehicles or "bollard pull" of boats or the "thrust" of jet engines when a proper "test rig" is designed and constructed to provide "frictionless" fore-aft movement of the load relative to the weigh bars.
Aiviq is an American icebreaking anchor handling tug supply vessel (AHTS) built in 2012 to support oil exploration and drilling in the Chukchi Sea off Alaska.The vessel's primary task was towing and laying anchors for drilling rigs, and oil spill response.
Fitted with oil recovery equipment 2010–16 Kontio is a Finnish state-owned icebreaker . Built by Wärtsilä Helsinki shipyard in 1987 as a replacement for the aging Karhu -class icebreakers, she and her sister ship Otso were the first Finnish post-war icebreaker to be built without bow propellers.
The towing system can accommodate either wire rope or synthetic-fiber hawsers and produce as much as 90 short tons of bollard pull. [5] [6] [4] She has a 10-ton capacity crane for moving loads on the aft deck. [3] There were connections to bolt down shipping containers and other equipment. Like all MSC ships, Narragansett was crewed by civilian ...
Bollard pull: 110,000 lb (50,000 kg) Water cannons: fore and aft, 3,500 US gal/min (790 m 3 /h) C-Tractor is a class of fourteen tractor tugs built by North American ...
2 ton Bollard Pull TID was a standardized British design for a tugboat drawn up and built during the Second World War . One hundred and eighty two (TID-1 to TID-12 and TID-14 to TID-183) were built for the Ministry of War Transport .
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