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Public safety diving team members bring in a casualty. Controlling an underwater search from the jetty. Underwater search and recovery is the process of locating and recovering underwater objects, often by divers, [ 1] but also by the use of submersibles, remotely operated vehicles and electronic equipment on surface vessels.
An underwater circular search is a procedure conducted by a diver moving around a fixed reference point, usually by swimming, at a series of distances (radii). The circular search is simple and requires little equipment. It is useful where the position of the objects of the search is known with reasonable accuracy. [ 1]: 142.
Underwater fillet weld in a training pool. Underwater cutting and welding are metalworking techniques used by underwater divers in underwater construction, marine salvage and clearance diving applications. Most underwater welding is direct current wet stick welding, and most underwater metal cutting is immersed oxygen-arc and shielded metal-arc ...
Treasure hunting is the physical search for treasure. For example, treasure hunters try to find sunken shipwrecks and retrieve artifacts with market value. This industry is generally fueled by the market for antiquities. The practice of treasure-hunting can be controversial, as locations such as sunken wrecks or cultural sites may be protected ...
Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and its boundaries. The water may be in the ocean, a lake, a river or a tank. Typical frequencies associated with underwater acoustics are between 10 ...
The Underwater Inspection System ( UIS) is a system manufactured by CodaOctopus and consists of the unique Echoscope Real Time 3D Sonar that is used to scan the underwater environment in zero visibility waters. The UIS system can be mounted on a small boat to scan harbor walls, piers, bridges for an underwater threat and can be used to ...
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