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SEAMANSHIP

OPEN MOOR When a vessel is anchored with both anchors leading ahead, she is said to be on open moor. Supposing a vessel is lying to a single anchor dead ahead and with a stress in her cable of tonnes. If she had two anchors leading dead ahead the stress in each would be ½ […]

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SEAMANSHIP

DRAGGING ANCHOR Generally speaking, once an anchor starts to drag, the vessel gathers sternway, and this may become excessive. Prompt action is necessary. However, there are exceptions, and vessel riding out a gale has been known to drag slowly and steadily for some days at roughly a mile per day. If the wind rises, extra […]

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SEAMANSHIP

THE PATENT STOCKLESS ANCHOR This anchor is also illustrated in Figure. It has no stock, and can therefore be hove right home into the hawse pipe, quickly secured, and is ready for instant letting go. The entire head, including the arms and flukes, is able to pivot about the end of the shank. Its angle […]

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SEAMANSHIP

ANCHORING TO A SINGLE ANCHOR In calm weather the anchorage is approached at slow speed and the anchor is let go while the ship has either headway or stern way. The cable is laid out, and engines are used to relieve stresses in the cable just before the vessel brings-to. The officer who is anchoring […]

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SEAMANSHIP

The Admirality Pattern, Stocked or Common Anchor This anchor is illustrated in fig together with the names of the various parts. It is fitted with a stock, which should be of an approved design and weigh one-quarter of the specified weight of the remainder of the anchor. It is renowned for its excellent holding qualities, […]

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Amount of Anchor Cable to Use

A term used here is scope. The length of cable laid out, measured from the hawse pipe to the anchor, divided by the distance measured vertically from the hawse pipe to the se-bed, is called the scope of cable .the scope used depends upon several factors: The nature of the holding ground .Stiff clay, rock, […]

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