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2. Dock plate - Wikipedia

   en.wikipedia.org/wiki/Dock_plate

   Dock levelers are more expensive devices than the comparatively light-weight dock plates and dock boards. The most common form of dock leveler is the recessed, or pit, dock leveler. As the name suggests, this type of leveler is contained in a recess, or pit, beneath the dock door and floor surface.

3. Loading dock - Wikipedia

   en.wikipedia.org/wiki/Loading_dock

   Shim: Steel plates used to help level pit-mounted dock levelers. Shims may be placed under the frame structure and welded in place to provide a structural load path to the foundation of the building. Frame: Supporting structure of a dock leveler. Deck: The deck assembly is the most visual aspect of the loading dock leveler.

4. Caisson (lock gate) - Wikipedia

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

   This is a permanent fixture within the dock, like a hinged dock gate, and moves upon a fixed track. The sides of the caisson are vertical, making a narrow rectangular box. Water ballast is used to control its buoyancy, as for the ship caisson, but the floating caisson is then hauled sideways into a recess built into the side of the dock wall.

5. Levelling - Wikipedia

   en.wikipedia.org/wiki/Levelling

   A wooden tripod holding an optical level is set up firmly on the ground. Levelling or leveling (American English; see spelling differences) is a branch of surveying, the object of which is to establish or verify or measure the height of specified points relative to a datum.

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Dry dock - Wikipedia

   en.wikipedia.org/wiki/Dry_dock

   A floating dry dock is a type of pontoon for dry docking ships, possessing floodable buoyancy chambers and a U-shaped cross-section. The walls are used to give the dry dock stability when the floor or deck is below the surface of the water. When valves are opened, the chambers fill with water, causing the dry dock to float lower in the water ...