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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 ...
The SZB project includes a 6.7 km-long (4.2 mi) immersed tube which also will be the world's widest immersed tube, carrying eight traffic lanes. [11] Prior to the completion of the Marmaray and HZMB tunnels, the Transbay Tube in San Francisco Bay, completed in 1969, was the world's deepest and longest immersed tube, at 41 metres (135 ft) below ...
The biggest and the first underwater river railway tunnel in India. It is a metro railway tunnel connecting Kolkata to Howrah. [11] [12] 0.520 km: 30 m: 2021 Bangabandhu Sheikh Mujibur Rahman Tunnel: Chittagong, Bangladesh: First under-river road tunnel in South Asia: 3.32 km: 18 - 31 m: 2019–2022 Hvalfjörður Tunnel: Capital Region, Iceland
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).
A rare attack by a river otter in southern Montana injured three women floating on inner tubes and inflicted wounds serious enough that one victim had to be airlifted to a hospital, authorities ...
[6] [7] It is popular as a tubing destination where recreational users often float down it on inflated tire inner tubes during the spring and summer months. East of Boerne , on the border of Kendall County and Comal County , it flows through Guadalupe River State Park , one of the more popular tubing areas along it.