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2. Winch - Wikipedia

   en.wikipedia.org/wiki/Winch

   A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable"). In its simplest form, it consists of a spool (or drum) attached to a hand crank. Traditionally, winches on ships accumulated wire or rope on the drum; those that do ...

3. Anchor windlass - Wikipedia

   en.wikipedia.org/wiki/Anchor_windlass

   A windlass is a machine used on ships that is used to let-out and heave-up equipment such as a ship's anchor or a fishing trawl. On some ships, it may be located in a specific room called the windlass room. An anchor windlass is a machine that restrains and manipulates the anchor chain on a boat, allowing the anchor to be raised and lowered by ...

4. Capstan (nautical) - Wikipedia

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

   Capstan winches were also important on sailing trawlers (e.g. Brixham trawlers) as a means for fetching in the nets after the trawl. When they became available, steam powered capstan winches offered a great saving in effort. These used a compact combined steam engine and boiler below decks that drove the winch from below via a shaft.

5. Electric boat - Wikipedia

   en.wikipedia.org/wiki/Electric_boat

   An electric boat is a powered watercraft driven by electric motors, which are powered by either on-board battery packs, solar panels or generators. [1] While a significant majority of water vessels are powered by diesel engines, with sail power and gasoline engines also popular, boats powered by electricity have been used for over 120 years.

6. Active heave compensation - Wikipedia

   en.wikipedia.org/wiki/Active_heave_compensation

   [4] [5] Hydraulic "active boost" winches control the oil flow from the pump(s) to the winch so that the target position is reached. Hydraulic winch systems can use accumulators and passive heave compensation to form a semi-active system with both an active and a passive component. In such systems the active part will take over when the passive ...

7. Windlass - Wikipedia

   en.wikipedia.org/wiki/Windlass

   Windlass. The windlass / ˈwɪndləs / is an apparatus for moving heavy weights. Typically, a windlass consists of a horizontal cylinder (barrel), which is rotated by the turn of a crank or belt. A winch is affixed to one or both ends, and a cable or rope is wound around the winch, pulling a weight attached to the opposite end.