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2. Capstan (nautical) - Wikipedia

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

   The tensioned portion of the rope would fasten the ship to the quay, hoist a foresail, lift a spar into position on the mast or be used to transfer cargo to or from a dock or lighter. A capstan is a vertical-axled rotating machine developed for use on sailing ships to multiply the pulling force of sailors when hauling ropes, cables, and hawsers.

3. Roller ship - Wikipedia

   en.wikipedia.org/wiki/Roller_ship

   The roller ship was an unconventional and unsuccessful ship design of the late nineteenth century, which attempted to propel itself by means of large wheels. Only one such vessel was constructed — Ernest Bazin , named for its inventor — which was found to be impractical.

4. Ship motions - Wikipedia

   en.wikipedia.org/wiki/Ship_motions

   The vertical/Z axis, or yaw axis, is an imaginary line running vertically through the ship and through its centre of mass. A yaw motion is a side-to side movement of the bow and stern of the ship. The transverse/Y axis, lateral axis, or pitch axis is an imaginary line running horizontally across the ship and through the centre of mass. A pitch ...

5. San Antonio-class amphibious transport dock - Wikipedia

   en.wikipedia.org/wiki/San_Antonio-class...

   The San Antonio class is a class of amphibious transport docks, also called a "landing platform, dock" (LPD), used by the United States Navy.These warships replace the Austin-class LPDs (including Cleveland and Trenton sub-classes), as well as the Newport-class tank landing ships, the Anchorage-class dock landing ships, and the Charleston-class amphibious cargo ships that have already been ...

6. Rotor ship - Wikipedia

   en.wikipedia.org/wiki/Rotor_ship

   The ship is propelled, at least in part, by large powered vertical rotors, sometimes known as rotor sails. German engineer Anton Flettner was the first to build a ship that attempted to tap this force for propulsion. "The idea worked, but the propulsion force generated was less than the motor would have generated if it had been connected to a ...

7. Floating dock (jetty) - Wikipedia

   en.wikipedia.org/wiki/Floating_dock_(jetty)

   A floating dock, floating pier or floating jetty is a platform or ramp supported by pontoons. It is usually joined to the shore with a gangway. It is usually joined to the shore with a gangway. The pier is usually held in place by vertical poles referred to as pilings, which are embedded in the seafloor or by anchored cables . [ 1 ]