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  2. Defense against swimmer incursions - Wikipedia

    en.wikipedia.org/wiki/Defense_against_swimmer...

    Underwater firearms fire a steel rod, not a bullet, for better range underwater. They are all more powerful than a speargun, and can fire several shots before reloading. Their barrels are not rifled; the fired projectile is kept in line underwater by hydrodynamic effects, and is somewhat inaccurate when fired out of water. [citation needed]

  3. Drowning detection system - Wikipedia

    en.wikipedia.org/wiki/Drowning_detection_system

    Passive system underwater cameras let lifeguards inspect multiple underwater views simultaneously from a single location. [ 6 ] [ 7 ] Cameras can cover areas which may otherwise be obstructed. Below water cameras can be paired with above water cameras to provide face-to-body matching if there is an incident where a swimmer needs to be ...

  4. Personal protective equipment - Wikipedia

    en.wikipedia.org/wiki/Personal_protective_equipment

    Diving equipment, for underwater diving, constitutes equipment such as a diving helmet or diving mask, an underwater breathing apparatus, and a diving suit. Firefighters wear PPE designed to provide protection against fires and various fumes and gases.

  5. Underwater Port Security System - Wikipedia

    en.wikipedia.org/wiki/Underwater_Port_Security...

    The Integrated Anti-Swimmer System is a United States Coast Guard underwater anti-diver ultrasound weapons system. IAS includes:- SM2000 (Underwater Surveillance System), a search sonar made by Kongsberg Maritime. An underwater warning loudspeaker. An underwater shockwave emitter that can force divers to surface, or stun or kill them. The US ...

  6. Underwater computer vision - Wikipedia

    en.wikipedia.org/wiki/Underwater_computer_vision

    Underwater computer vision is a subfield of computer vision. In recent years, with the development of underwater vehicles ( ROV, AUV, gliders), the need to be able to record and process huge amounts of information has become increasingly important. Applications range from inspection of underwater structures for the offshore industry to the ...

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