Definition

1. Noun:
   • A rapid emergency descent by a submarine: A "crash dive" is a maneuver in which a submarine submerges as quickly as possible, typically to avoid detection or an immediate threat.

Usage

• The term is used specifically in naval and maritime contexts to describe an urgent, rapid diving action.
• It functions as a countable noun (e.g., , ).

Examples

• Noun:
  • The captain ordered a crash dive when an enemy ship was spotted on the horizon.
  • During the drill, the crew practiced a crash dive to test their emergency procedures.

Advanced Usage

• The term can be used metaphorically to describe any sudden, rapid, and uncontrolled descent, though this is an extended, figurative use.
  • The stock market took a crash dive after the news was announced.

Variants and Related Words

• Crash-dive (verb): The act of performing a crash dive.
  • The submarine had to crash-dive to evade the torpedo.

Synonyms

• Emergency dive: A dive performed under urgent circumstances.
• Rapid descent: A general term for a quick downward movement.

Related Phrases

• To go into a crash dive: To begin the maneuver of crash diving.
  • The vessel went into a crash dive, disappearing beneath the waves in seconds.

Noun

1. a rapid descent by a submarine