Life buoy with a radar responder

摘要

A life buoy equipped with a radar responder adapted to transmit waves in response to radar waves from a searcher, the life buoy comprising a hull member of a rigid plastic hollow construction, the hull member water-tightly accommodating a receiving antenna, a receiver, a transmitting antenna, a transmitter and a battery in a vertical manner such that the center of gravity is located at a distance from and below the center of buoyancy, and the hull member having a downwardly converging shape from under the level of water at least up to the center of buoyancy.