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2. Bilgeboard - Wikipedia

   en.wikipedia.org/wiki/Bilgeboard

   A bilgeboard is a lifting foil used in a sailboat, which resembles a cross between a centerboard and a leeboard.Bilgeboards are mounted between the centerline of the boat and the sides, and are almost always asymmetric foils mounted at an angle to maximize lateral lift while minimizing drag.

3. Centreboard - Wikipedia

   en.wikipedia.org/wiki/Centreboard

   A long narrow centreboard produces less drag than a short, wide one for a given amount of lift, resulting in a faster boat that can point closer into the wind. A fore and aft, pivoting centreboard can also be used to move the centre of lateral resistance aft to match a change in sail plan, such as furling or dropping the jib.

4. Daggerboard - Wikipedia

   en.wikipedia.org/wiki/Daggerboard

   A catamaran in a storm would lift the leeward hull daggerboard and fully extend the upwind daggerboard. [citation needed] If there is no wind and an outboard motor is being used, lifting the daggerboards will ensure the least drag. [3] When a small sailboat flips on its side, the keel can also be used to right the boat.

5. Boat lift - Wikipedia

   en.wikipedia.org/wiki/Boat_lift

   A boat lift, ship lift, or lift lock is a machine for transporting boats between water at two different elevations, and is an alternative to the canal lock. It may be vertically moving, like the Anderton boat lift in England , rotational, like the Falkirk Wheel in Scotland , or operate on an inclined plane , like the Ronquières inclined plane ...

6. Portable boat lift - Wikipedia

   en.wikipedia.org/wiki/Portable_boat_lift

   A portable boat lift is not a boat lift which is commonly found attached to a dock. Although some devices allow one person to separate a boat from a trailer or lift a boat up and out of the water, they are not by definition portable. The term "boat lift" originally referred to lift locks. In modern usage the term "boat lift," as opposed to ...

7. Shiplift - Wikipedia

   en.wikipedia.org/wiki/Shiplift

   Whereas "shiplift" is the word that is normally used, the term used by Lloyd's register is "Mechanical Lift Dock". There are two different kinds of platform design, the articulated and the rigid. [1] The articulated platform has hinged connections between the main and the longitudinal beams. A rigid platform, the beams are bolted or welded ...