#escape_hatch  hatchway that provides a means of escape in an emergency
  supertype:  #hatchway__opening__scuttle  an entrance equipped with a hatch; especially a passageway between decks of a ship
  part of:  #airplane__aeroplane__plane  an aircraft that has a fixed wing and is powered by propellers or jets; "the flight was delayed due to trouble with the airplane"
  part of:  #pigboat__submarine__sub__uboat  a submersible warship usually armed with torpedoes

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