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VB-10,000 performed its first lift on 9 October 2010, a 1,530-short-ton (1,390 t) topside and jacket which had toppled during a storm at Vermilion 285. Approximately a week later, VB-10,000 retrieved a 2,500-short-ton (2,300 t) topside which had been damaged by fire. [11] The Claw was used in 20 lift projects during its first year of deployment ...
The machinery is specifically designed for anchor handling operations. They also have arrangements for quick anchor release, which is operable from the bridge or other normally crewed locations in direct communication with the bridge. The reference load used in the design and testing of the towing winch is twice the static bollard pull.
Modern forms are the plate anchor, in which the guy is attached to a rod with an eyelet extending from the center of a steel plate buried diagonally, perpendicular to the angle of the guy. In the concrete anchor, a diagonal rod with an eyelet extending in the guy direction is cemented into a hole filled with steel reinforced concrete.
Anchors are sometimes fitted with a trip line [13] attached to the crown, by which they can be unhooked from underwater hazards. The term aweigh describes an anchor when it is hanging on the rope and not resting on the bottom. This is linked to the term to weigh anchor, meaning to lift the anchor from the sea bed, allowing the ship or boat to move.
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 .
An anchor secured to the ship's side. The projecting beam the anchor hangs from when not secured is a cathead (left). The anchor has a stock (cross-piece, in this case wooden) below, and curved flukes above (end-on); the shank is the near-vertical metal bar running between them, lashed with the shank painter Cathead on bow of the barque James Craig; the cat tail protrudes onto the deck and is ...
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Lip can be hinged or telescopic type. They are operated either manually, via a simple pull chain, or hydraulically, (most common) with an electric pump driving a piston to lift the plate and another one to move the lip. [4] [3] [6] Dock levelers are more expensive devices than the comparatively light-weight dock plates and dock boards.
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