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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 bollard pull and propulsion power would have to be sufficient to allow continuous operation in level ice with a thickness of 1.5 metres (5 ft) and 10–20-centimetre (4–8 in) snow cover as well as make the vessel capable of opening a 25-metre (82 ft) channel through uniform 1.2 metres (4 ft) ice field at a speed of 6 knots (11 km/h; 6.9 ...
The bollard pull of the vessel is 158 tonnes. [6] The hull of Kronprins Haakon is strengthened according to International Association of Classification Societies (IACS) Unified Requirements for Polar Class Ships for operations in winter ice with pressure ridges, multi-year ice, and glacial ice inclusions. [7]
A tugboat is typically rated by its engine's power output and its overall bollard pull. The largest commercial harbour tugboats in the 2000s–2010s, used for towing container ships or similar, had around 60 to 65 short tons-force (530–580 kN) of bollard pull, which is described as 15 short tons-force (130 kN) above "normal" tugboats. [5] [6]
Mellum: 5 nmi (9.3 km) southwest off Heligoland, bollard pull of 100 t [12] Neuwerk: 5 nmi (9.3 km) southwest off Süderoogsand (Nordfriesland), bollard pull of 113 t [13] Baltic Sea. Bülk: Kiel Fjord, bollard pull of 40 t [14] Scharhörn: Hohwacht Bay (between Kiel and Fehmarn), bollard pull of 40 t [15] Baltic: Warnemünde, 127 t of bollard ...
In California, minimum coverage car insurance requirements are 30/60/15 effective Jan. 1, 2025. Utah minimum coverage limits will increase to 30/60/25. Virginia limits will be 50/100/25.
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 ...
Both Thomas and Alito have cited the “personal hospitality” exemption from annual reporting requirements, which they said relieved them of any obligation to report the trips.
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