#life_buoy__lifesaver__life_belt__life_ring  a life preserver in the form of a ring of buoyant material
  supertype:  life_preserver__preserver__flotation_device__flotationdevice  rescue equipment consisting of a buoyant belt or jacket to keep a person from drowning
  subtype:  breeches_buoy  a life buoy in the form of a ring with short breeches for support; used to transfer people from a ship

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