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2. Buoyancy aid - Wikipedia

   en.wikipedia.org/wiki/Buoyancy_aid

   A rough life expectancy is three years of use, although buoyancy aids exposed to polluted water may degrade faster than normally expected. In practice buoyancy aids far exceed a 3-year service life expectancy, and can be tested for buoyancy using a weight. The other issues are damage, stitching and wear.

3. Inflatable boat - Wikipedia

   en.wikipedia.org/wiki/Inflatable_boat

   A modern Hypalon inflatable boat with rigid wooden floorboards, a transom and an inflatable keel, powered by a 12 volt electric trolling motor. Inflatable liferafts were also used successfully to save crews of aircraft that ditched in the sea; bombing, naval and anti-submarine aircraft flying long distances over water being much more common ...

4. Rigid inflatable boat - Wikipedia

   en.wikipedia.org/wiki/Rigid_inflatable_boat

   RNLI inshore rescue boat during Falmouth Lifeboat Day, August 2006. A rigid inflatable boat (RIB), also rigid-hull inflatable boat or rigid-hulled inflatable boat (RHIB), is a lightweight but high-performance and high-capacity boat constructed with a rigid hull bottom joined to side-forming air tubes that are inflated with air to a high pressure so as to give the sides resilient rigidity along ...

5. Personal flotation device - Wikipedia

   en.wikipedia.org/wiki/Personal_flotation_device

   Personal flotation devices being worn on a navy transport . A personal flotation device (PFD; also referred to as a life jacket, life preserver, life belt, Mae West, life vest, life saver, cork jacket, buoyancy aid or flotation suit) is a flotation device in the form of a vest or suit that is worn by a user to prevent the wearer from drowning in a body of water.

6. Combat rubber raiding craft - Wikipedia

   en.wikipedia.org/wiki/Combat_Rubber_Raiding_Craft

   The final chamber is an inflatable keel tube which runs the length of the craft and gives the bottom of the hull a "V" shape, imparting directional stability and additional shock absorption. A wooden "transom" board at the stern provides a mounting point for the outboard engine(s). The deck (floor) is composed of four interlocking aluminum ...

7. Lifebuoy - Wikipedia

   en.wikipedia.org/wiki/Lifebuoy

   Lifebuoy with emergency light on a cruise ship A lifebuoy floating on water. A lifebuoy or life ring, among many other names (see § Other names), is a life-saving buoy designed to be thrown to a person in water to provide buoyancy and prevent drowning. [1]