About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 53. Chapters: Aftercastle, Anchor, Anchor windlass, Beakhead, Beitass, Bilge, Bilgeboard, Bilge keel, Binnacle, Boom brake, Boom vang, Bulb keel, Capstan (nautical), Carling (sailing), Centreboard, Chains (nautical), Cockpit (sailing), Composite ship, Copper sheathing, Daggerboard, Deck (ship), Double bottom, Double hull, Extra (sailing), False keel, Figurehead (object), Flinders bar, Forecastle, Gaff vang, Gangway (nautical), Gunwale, Hawsehole, Hawser, Hull (watercraft), Jackline, Jacob's ladder (nautical), Jib, Leeboard, List of ship directions, Orlop, Poop deck, Quarter gallery, Rudder, Sea anchor, Ship's wheel, Spinnaker, Steering oar, Tiller, Topmast, Trailboard, Truck (rigging), Unstayed mast, Wave-piercing, Winch. Excerpt: An anchor is a device normally made of metal, that is used to connect a vessel to the bed of a body of water to prevent the craft from drifting due to wind or current. The word derives from Latin ancora, which itself comes from the Greek (ankura). Anchors can either be temporary or permanent. A permanent anchor is used in the creation of a mooring, and is rarely moved; a specialist service is normally needed to move or maintain it. Vessels carry one or more temporary anchors, which may be of different designs and weights. A sea anchor is a drogue, not in contact with the seabed, used to control a drifting vessel. A stockless anchor being broken outAnchors achieve holding power either by "hooking" into the seabed, or via sheer mass, or a combination of the two. Permanent moorings use large masses (commonly a block or slab of concrete) resting on the seabed. Semi-permanent mooring anchors (such as mushroom anchors) and large ship's anchors derive a significant portion of their holding power from their mass, while also hooking or embedding in the bottom. Modern anchors for smaller vessels have metal flukes which hook on to rocks on the bottom or bury themselves in soft seabed. The vessel is attached to the anchor by the rode, which is made of chain, cable, rope, or a combination of these. The ratio of the length of rode to the water depth is known as the scope. Anchoring with sufficient scope and/or heavy chain rode brings the direction of strain close to parallel with the seabed. This is particularly important for light, modern anchors designed to bury in the bottom, where scopes of 5-7 to 1 are common, whereas heavy anchors and moorings can use a scope of 3 to 1 or less. Since all anchors that embed themselves in the bottom require the strain to be along the seabed, anchors can be broken out of the bottom by shortening the rode until the vessel is directly above the anchor; at this point the anchor chain is "up and down," in naval parlance. If necessary, motor
