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2. Jacob's ladder (nautical) - Wikipedia

   en.wikipedia.org/wiki/Jacob's_ladder_(nautical)

   A pilot ladder has specific regulations on step size, spacing and the use of spreaders. It is the use of spreaders (long treads that extend well past the vertical ropes) in a pilot ladder that distinguishes it from a Jacob's ladder. When not being used, the ladder is stowed away, usually rolled up, rather than left hanging.

3. Ladder - Wikipedia

   en.wikipedia.org/wiki/Ladder

   Swim ladder, a ladder used by swimmers to get out of the water, often on boats. Telescoping ladder, commonly used to refer to a hybrid between a step ladder and an extension ladder with 360-degree hinges; has three parts and can be taken apart to form two step ladders; e.g. Little Giant. Trestle ladder, an "A-Frame"-style ladder with a ...

4. Lofting - Wikipedia

   en.wikipedia.org/wiki/Lofting

   A 1:1 scale construction drawing of a boat and its parts Lines plan A scaled-down version of a full-sized drawing often including the body, plan, profile, and section views Body Plan A view of the boat from both dead ahead and dead astern split in half Plan view A view looking down on the boat from above Profile view A view of the boat from the ...

5. Telescoping (mechanics) - Wikipedia

   en.wikipedia.org/wiki/Telescoping_(mechanics)

   Telescoping in mechanics describes the movement of one part sliding out from another, lengthening an object (such as a telescope or the lift arm of an aerial work platform) from its rest state. [1] In modern equipment this can be achieved by a hydraulics , but pulleys are generally used for simpler designs such as extendable ladders and amateur ...

6. Planing (boat) - Wikipedia

   en.wikipedia.org/wiki/Planing_(boat)

   Planing sailing boats need a good sail area and powerboats need a high-power engine. Steps and chine ridges may also be incorporated into the design to encourage both ease of planing and stability. Most surfboards, although unpowered, are planing or semi-planing hulls. They utilize the push of the waveform more or less in combination with ...

7. Bermuda rig - Wikipedia

   en.wikipedia.org/wiki/Bermuda_rig

   J-class cutter-rigged sail plan with Bermuda mainsail c. 1930 Bermuda rig , Bermudian rig , or Marconi rig is a type of sailing rig that uses a triangular sail set abaft (behind) the mast. It is the typical configuration for most modern sailboats.