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2. Caisson (lock gate) - Wikipedia

   en.wikipedia.org/wiki/Caisson_(lock_gate)

   A caisson is a form of lock gate. It consists of a large floating iron or steel box. This can be flooded to seat the caisson in the opening of the dock to close it, or pumped dry to float it and allow it to be towed clear of the dock. Graving docks at Birkenhead, closed by a variety of ship caissons and floating (sliding) caissons.

3. 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 ...

4. Lock (water navigation) - Wikipedia

   en.wikipedia.org/wiki/Lock_(water_navigation)

   The exit gates are opened and the boat moves out. [11] If the lock were empty, the boat would have had to wait 5 to 10 minutes while the lock was filled. For a boat travelling upstream, the process is reversed; the boat enters the empty lock, and then the chamber is filled by opening a valve that allows water to enter the chamber from the upper ...

5. Amphibious transport dock - Wikipedia

   en.wikipedia.org/wiki/Amphibious_transport_dock

   An amphibious transport dock, also called a landing platform dock (LPD), [ 1 ] is an amphibious warfare ship, a warship that embarks, transports, and lands elements of a landing force for expeditionary warfare missions. [ 2 ] Several navies currently operate this kind of ship. The ships are generally designed to transport troops into a war zone ...

6. San Giorgio-class amphibious transport dock - Wikipedia

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

   The San Giorgio class are amphibious transport docks (LPD) [1][2] built by Fincantieri for the Italian Navy. These ships can carry a battalion of troops, and up to 36 armored vehicles. The stern floodable dock can accommodate three landing craft. The ships are based at the Brindisi naval base on the Adriatic coast.

7. Type 071 amphibious transport dock - Wikipedia

   en.wikipedia.org/wiki/Type_071_amphibious...

   Type 071 amphibious transport dock. 25,000 tons full load. [2] The Type 071 (NATO reporting name: Yuzhao) is a class of Chinese amphibious transport dock ships in service with the People's Liberation Army Navy (PLAN). The Type 071 provides the PLAN with capabilities and flexibility not found in its previous landing ships.