#snorkel_breather__snorkelbreather__snorkel__schnorchel__breather  air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
  supertype:  #air_passage__airpassage__air_duct__airduct__airway  a duct that provides ventilation as in mines
  part of:  #pigboat__submarine__sub__uboat  a submersible warship usually armed with torpedoes

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