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Her hull has a beam of 24.4 metres (80 ft) and depth of 10.4 metres (34 ft 1 in). [1] Fully laden, she draws 8.6 metres (28 ft 3 in) of water. [ 60 ] Since Aiviq is an anchor handling tug and supply vessel, she is fitted with a large towing winch located amidships as well as chain lockers and storage tanks for both liquid and dry bulk cargo ...
The US naval jack (2002–2019) being raised on a jackstaff in 2002. A jack staff (also spelled as jackstaff) is a small vertical spar (pole) on the bow of a ship or smaller vessel on which a particular type of flag, known as a jack, is flown. [1] The jack staff was introduced in the 18th century. [2]
The first liftboat was designed in 1955 by brothers Lynn and Orin Dean in Violet, Louisiana.In the 1950s the Dean brothers owned a repair service for automobiles, marine, and farm equipment called Universal Repair Service, which is now known as EBI, Elevating Boats LLC.
The tensioned portion of the rope would fasten the ship to the quay, hoist a foresail, lift a spar into position on the mast or be used to transfer cargo to or from a dock or lighter. A capstan is a vertical- axled rotating machine developed for use on sailing ships to multiply the pulling force of sailors when hauling ropes, cables , and hawsers .
The hull is actually a water-tight barge that floats on the water’s surface. When the rig reaches the work site, the crew jacks the legs downward through the water and into the sea floor (or onto the sea floor with mat supported jackups). This anchors the rig and holds the hull well above the waves. [citation needed]
A downline is a diving jackstay from an anchor point at or above the surface to the underwater workplace used to control descent, ascent and the transfer of tools, materials and other equipment between the surface and the workplace. [4] Functions: Guiding divers to and from the underwater workplace.
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