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2. Lugger - Wikipedia

   en.wikipedia.org/wiki/Lugger

   Deal lugger, the two larger types of boat used by Deal boatmen to service ships anchored in the Downs. These were beach-launched open boats, originally three masted, but the main-mast was later dispensed with to allow more room, ultimately giving jib, dipping lug foresail and a standing lug mizzen sheeted to an outrigger.

3. Lifting bag - Wikipedia

   en.wikipedia.org/wiki/Lifting_bag

   A lifting bag is an item of diving equipment consisting of a robust and air-tight bag with straps, which is used to lift heavy objects underwater by means of the bag's buoyancy. The heavy object can either be moved horizontally underwater by the diver or sent unaccompanied to the surface. [1] Lift bag appropriate capacity should match the task ...

4. Block and tackle - Wikipedia

   en.wikipedia.org/wiki/Block_and_tackle

   Diagram 3 shows three rope parts supporting the load W, which means the tension in the rope is W/3. Thus, the mechanical advantage is three-to-one. By adding a pulley to the fixed block of a gun tackle the direction of the pulling force is reversed though the mechanical advantage remains the same, Diagram 3a. This is an example of the Luff tackle.

5. Glossary of nautical terms (M–Z) - Wikipedia

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

   1. (ship's boat) A small, light boat propelled by oars or a sail, used as a tender to larger vessels during the Age of Sail. 2. (full-rigged pinnace) A small "race built" galleon, square-rigged with either two or three masts. 3. In modern usage, any small boat other than a launch or lifeboat associated with a larger vessel. pintle

6. Trawling - Wikipedia

   en.wikipedia.org/wiki/Trawling

   Trawling is an industrial method of fishing that involves pulling a fishing net through the water behind one or more boats. The net used for trawling is called a trawl. This principle requires netting bags which are towed through water to catch different species of fishes or sometimes targeted species. Trawls are often called towed gear or ...

7. Marine salvage - Wikipedia

   en.wikipedia.org/wiki/Marine_salvage

   USS Regulus hard aground in 1971 due to a typhoon: after three weeks of effort, Naval salvors deemed it unsalvageable.. Marine salvage takes many forms, and may involve anything from refloating a ship that has gone aground or sunk as well as necessary work to prevent loss of the vessel, such as pumping water out of a ship—thereby keeping the ship afloat—extinguishing fires on board, to ...