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2. 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 ...

3. Puretic power block - Wikipedia

   en.wikipedia.org/wiki/Puretic_power_block

   The Puretic power block is a special kind of mechanised winch used to haul nets on fishing vessels. The power block is a large pulley of aluminium with a hard rubber-coated sheave. While many men were needed for the back-breaking work of hauling a purse seine manually, the same work could be done by fewer men with a power block. [1]

4. Defender-class boat - Wikipedia

   en.wikipedia.org/wiki/Defender-class_boat

   A 25-foot (8 m) Defender A-class boat from Maritime Safety and Security Team 91106 in New York Harbor. The Defender class utilizes a rigid deep-V hull constructed of marine grade aluminum. While similar in appearance to the sponson of a rigid-hulled inflatable boat the Defenders' collar is actually made from rigid polyethylene foam.

5. 47-foot Motor Lifeboat - Wikipedia

   en.wikipedia.org/wiki/47-foot_Motor_Lifeboat

   The boat's hull and superstructure are constructed entirely from 5456 marine grade aluminum. [3] Designed with a hard chined deep "V" planing hull , [ 8 ] the 47′ MLB exceeds its hull speed . The frame is composed of 17 vertical bulkhead frames, each of which is welded to the deck and hull, and five of which are watertight.

6. Harbor Freight Tools - Wikipedia

   en.wikipedia.org/wiki/Harbor_Freight_Tools

   Harbor Freight Tools, commonly referred to as Harbor Freight, is an American privately held tool and equipment retailer, headquartered in Calabasas, California. It operates a chain of retail stores, as well as an e-commerce business. The company employs over 28,000 people in the United States, [5] and has over 1,500 locations in 48 states. [6] [7]

7. Glossary of nautical terms (A–L) - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_nautical_terms...

   Most marine GPS units have an anchor watch alarm capability. anchor winch A horizontal capstan in the bow used for weighing anchor. [2] anchorage Any place suitable for a ship to anchor, often an area of a port or harbor. anchor's aweigh Said of an anchor to indicate that it is just clear of the bottom and that the ship is therefore no longer ...