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2. Anchor handling tug supply vessel - Wikipedia

   en.wikipedia.org/wiki/Anchor_handling_tug_supply...

   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.

3. Suction caisson - Wikipedia

   en.wikipedia.org/wiki/Suction_caisson

   Oil and gas recovery at great depth could have been a very difficult task without the suction anchor technology, which was developed and used for the first time in the North Sea 30 years ago. [1] The use of suction caissons/anchors has now become common practice worldwide. Statistics from 2002 revealed that 485 suction caissons had been ...

4. Offshore embedded anchors - Wikipedia

   en.wikipedia.org/wiki/Offshore_embedded_anchors

   A deep-penetrating anchor (DPA) is conceptually similar to a torpedo anchor: it features a dart-shaped, thick-walled, steel cylinder with flukes attached to the upper section of the anchor. A full-scale DPA is approximately 15 metres (49 ft) in length, 1.2 metres (4 ft) in diameter, and weighs on the order of 50–100 tonnes (49–98 long tons ...

5. Capstan (nautical) - Wikipedia

   en.wikipedia.org/wiki/Capstan_(nautical)

   Two barrels on a common axle were used frequently to allow men on two decks to apply force to the bars. Later capstans were made entirely of iron, with gearing in the head providing a mechanical advantage when the bars were pushed counterclockwise. One form of capstan was connected by a shaft and gears to an anchor windlass on the deck below.

6. Seamanship - Wikipedia

   en.wikipedia.org/wiki/Seamanship

   Anchor work includes an understanding and awareness of types of anchors, marks on anchors and cable and shackles. [16] It includes learning established procedures for securing anchors and cable, use of windlasses, how to prepare the anchors/clearing away anchors for letting go, letting-go (dropping) the anchor, keeping an anchor watch, clearing ...

7. Sea anchor - Wikipedia

   en.wikipedia.org/wiki/Sea_anchor

   A conical sea anchor with tripline (from an illustration in The Sailors Handbook by Halsey C. Herreshoff). 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 ...