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The history of the anchor dates back millennia. The most ancient anchors were probably rocks and many rock anchors have been discovered originating from at least the Bronze Age. [1] Many modern moorings remain reliant upon a large rock as the primary element of their design. However, using pure mass to resist the forces of a storm only works ...
An early wooden drogue. A sea anchor (also known as a parachute anchor, drift anchor, drift sock, para-anchor or boat brake) is a device that is streamed from a boat in heavy weather. Its purpose is to stabilize the vessel and to limit progress through the water. Rather than tethering the boat to the seabed with a conventional anchor, a sea ...
An anchor is a device, normally made of metal, used to secure 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 ἄγκυρα (ankȳra). [2][3] Anchors can either be temporary or permanent.
Anchor bolt. Anchor bolts are used to connect structural and non-structural elements to concrete. [2] The connection can be made by a variety of different components: anchor bolts (also named fasteners), steel plates, or stiffeners. Anchor bolts transfer different types of load: tension forces and shear forces.
The Oxford Dictionary states that seamanship is "The skill, techniques, or practice of handling a ship or boat at sea." [2] It involves topics and development of specialised skills, including navigation and international maritime law and regulatory knowledge; weather, meteorology and forecasting; watchkeeping; ship-handling and small boat ...
Anchor bolt, to attach objects or structures to concrete. Anchor (climbing), used in rock climbing. Anchor plate, to strengthen buildings. Anchor, part of a microdermal implant in body modification. Anchor escapement, a type of escapement used in pendulum clocks. Screw anchor, to secure a screw in a brittle material.
In amateur radio, a boat anchor or boatanchor is an old piece of radio equipment. [2] It is usually used in reference to large, heavy radio equipment of earlier decades that used tubes. In this context boat anchors are often prized by their owners and their strengths (e.g. immunity to EMP) emphasised, even if newer equipment is more capable.
For a small boat (e.g. 22' / 6.7 m sailing yacht), this might consist of a heavy weight on the seabed, a 12 mm or 14 mm rising chain attached to the "anchor", and a bridle made from 20 mm nylon rope, steel cable, or a 16 mm combination steel wire material. The heavy weight (anchor) should be a dense material.
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