Rescue buoy (submarine)
Floating buoy, attached to a submarine and released in the event of a serious accident or sinking / From Wikipedia, the free encyclopedia
Not to be confused with Rescue buoy.
A submarine rescue buoy is a floating buoy, attached to a submarine and released in the event of a serious accident or sinking. The buoy remains attached to the submarine by a cable. Once on the surface it can indicate to rescuers the position of the submarine, and may include a telephone for communication with the trapped submariners.