(diving) A backwards dive

A device, similar in appearance to a wristwatch, used by underwater divers to measure the time and depth of a dive, calculate a safe ascent profile, and avoid decompression sickness.

Alternative form of crash dive

Alternative form of crash dive

(idiomatic, military) An emergency maneuver by a submarine in which it suddenly descends, especially to considerable depth, usually in order to escape an attack or avoid a collision.

(intransitive, idiomatic, often hyphenated, submarine operation) To perform a crash dive. / (transitive, idiomatic, often hyphenated, submarine operation) To cause (a submarine) to perform a crash dive.

plural of dolphin dive

A form of rapid traversal through shallow water used by lifeguards, consisting of a series of dive-like forward leaps alternated with tucking the feet under the chest.

simple past tense of take a dive

past participle of take a dive