Submerged signal ejector

A submerged signal ejector is a device used by submarines, similar to a torpedo tube. Although, instead of deploying weapons, it launches signal flares, smokes, distress buoys, SEPIRB, water temperature sensors and countermeasure decoys from the submarine.[1][2][3][4] Signal ejectors can also send communication notes,[4] as was done in the rescuing of the BAP Pacocha (SS-48) crew.[5]

References
  1. Royal Canadian Navy (c. 1965). "Sect 5 - Pyrotechnic & countermeasure stores". C.F. 'O' Class Submarines - Weapons and Equipment.
  2. "Sonobuoy Based Outdoor Intrusion Detectors".
  3. MBE, Stephen Bridgman (2012-09-17). My Bloody Efforts: Life as a Rating in the modern Royal Navy. AuthorHouse. ISBN 9781477218020.
  4. Canadian Coast Guard (2017). "Notice 34 Information Concerning Submarines".
  5. The B.A.P. Pacocha Collision: The Escape and Medial Recompression Treatment of Survivors (PDF). Naval Submarine Medical Research Laboratory. 1989. p. 6.


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