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  2. Tubing (recreation) - Wikipedia

    en.wikipedia.org/wiki/Tubing_(recreation)

    A mother holds two children in an automobile inner tube floating on an unidentified body of water in 1916. Towed tubing behind a personal watercraft on the Mississippi River Free-floating tubers on Esopus Creek in the Catskill Mountains of New York. Tubing on water generally consists of two forms: towed and free-floating, also known as river ...

  3. Pontoon bridge - Wikipedia

    en.wikipedia.org/wiki/Pontoon_bridge

    A treadway bridge could be built of floating spans or fixed spans. [47] An M2 treadway bridge was designed to carry artillery, heavy duty trucks, and medium tanks up to 40 short tons (36 t). [39] This could be of any length, and was what was used over major river obstacles such as the Rhine and Moselle.

  4. Pontoon boat - Wikipedia

    en.wikipedia.org/wiki/Pontoon_boat

    A pleasure boat with two lengthwise pontoons. A pontoon boat is a flattish boat that relies on floats to remain buoyant. These pontoons (also called tubes) contain much reserve buoyancy and allow designers to create large deck plans fitted with a variety of accommodations including expansive lounge areas, stand-up bars, and sun pads.

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  6. Pusher (boat) - Wikipedia

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

    Larger boats can run this segment of the river with the maximum tow size of 42 barges southbound and 40+ northbound. A typical River tow might be 35 to 42 barges, each about 200 feet (61 m) long by 35 feet (11 m) wide, configured in a rectangular shape 6 to 7 barges long and 5 to 6 barges wide, depending on the number of barges in tow.

  7. Submerged floating tunnel - Wikipedia

    en.wikipedia.org/wiki/Submerged_floating_tunnel

    Submerged floating tunnels can be anchored to the seafloor (left) or suspended from a pontoon (right) A submerged floating tunnel (SFT), also known as submerged floating tube bridge (SFTB), suspended tunnel, or Archimedes bridge, is a proposed design for a tunnel that floats in water, supported by its buoyancy (specifically, by employing the hydrostatic thrust, or Archimedes' principle).