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2. Pontoon bridge - Wikipedia

   en.wikipedia.org/wiki/Pontoon_bridge

   A pontoon bridge is a collection of specialized, shallow draft boats or floats, connected together to cross a river or canal, with a track or deck attached on top. The water buoyancy supports the boats, limiting the maximum load to the total and point buoyancy of the pontoons or boats. [ 2 ] The supporting boats or floats can be open or closed ...

3. Caisson (engineering) - Wikipedia

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

   Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure [1] used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, [2] or for the repair of ships.

4. Dardanelle pontoon bridge - Wikipedia

   en.wikipedia.org/wiki/Dardanelle_pontoon_bridge

   The Dardanelle pontoon bridge was a floating bridge on the Arkansas River connecting Pope and Yell counties at Dardanelle, Arkansas. The bridge was used for nearly four decades in the late 19th and early 20th centuries, except for periods when its operation was interrupted by high river flows or other disruptions.

5. 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. 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] Frequently used in marinas, this type of pier maintains a fixed ...

6. Float (nautical) - Wikipedia

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

   A pontoon boat is a flattish boat that relies on nautical floats for buoyancy. Common boat designs are a catamaran with two pontoons, or a trimaran with three. [2] In many parts of the world, pontoon boats are used as small vehicle ferries to cross rivers and lakes. [3] An anchored raft-like platform used for diving, often referred to as a pontoon

7. Buoy - Wikipedia

   en.wikipedia.org/wiki/Buoy

   Green can #11 near the mouth of the Saugatuck River (IALA region B). Green Can #11 on a nautical chart. NOAA Weather buoy. A buoy (/ ˈbɔɪ, buː.i /; boy, BOO-ee) [1][2] is a floating device that can have many purposes. It can be anchored (stationary) or allowed to drift with ocean currents.