crash dive
Submarine escape maneuver
A crash dive is an emergency descent by a submarine or aircraft, executed as rapidly as possible.
Submarines crash dive to escape detection or attack, flooding ballast tanks to drop below the surface quickly: The captain ordered a crash dive when enemy planes appeared.
The term applies to any steep, urgent plunge, including figurative ones: The stock took a crash dive after the earnings report.
Sudden steep descent
- submergePlunge beneath liquid
- descendMove to lower position
- depthsLowest or innermost regions
- periscopeAngled optical viewing tube
torpedo · sonar · hull · ballast · propulsion · underwater · submersion · silent running
Radio emergency signal
- distressSevere anxiety or suffering
- ejectThrow out forcibly
- escapeFlight from captivity
- rescueSave from harm
SOS · alert · evacuation · evasive maneuver · collision · avoidance · rapid descent · nosedive
plunge
Sudden steep descent
periscope · torpedo · sonar · hull · ballast · propulsion · underwater · submersion · silent running · U-boat
mayday
Radio emergency signal
rescue · SOS · alert · evacuation · evasive maneuver · collision · avoidance · rapid descent · nosedive · pull up