crash diving

Verb

crash dive (third-person singular simple present crash dives, present participle crash diving, simple past crash dived or (chiefly US) crash dove, past participle crash dived)

1. (idiomatic, intransitive, often hyphenated, submarine operation) To perform a crash dive.
   • Cuthburt turned the Grandmere in time to see the U-69 within yards of his ship. Graf wasted no time in taking evasive action, crash diving and turning, barely escaping the Grandmere’s efforts to ram him.2012 October 14, Lorna Inness, “Death on the Caribou”, in ChronicleHerald, Halifax, Canada, retrieved 25 Oct 2015
2. (idiomatic, transitive, often hyphenated, submarine operation) To cause (a submarine) to perform a crash dive.
   • Siegmann was still obliged to crash-dive the sub three more times to escape twelve more bombs.2014, Philip Kaplan, Grey Wolves: The U-Boat War, "Sit There and Take It" (Google online preview)
3. (intransitive, often hyphenated) To rapidly descend, intentionally or accidentally, in a manner that ends in a violent collision.
   • At 0640 hours, a Japanese suicide plane crash-dove into the USS Gilligan.2008, James Richard Snellen, South Pacific at Seventeen, →ISBN, page 48
4. (transitive, often hyphenated) To rapidly descend, in a manner that ends in a violent collision with (something).
   • Twenty-two Jap suicide planes sighted destroyer off Okinawa April 16 and for more than two hours bombed and crash-dived the ship in a wild and apparently unorganized attack.1945 July 30, John Hersey, “Kamikaze”, in Life, volume 19, number 5, retrieved 28 Oct 2015, page 70
5. (transitive, often hyphenated) To cause (something) to descend rapidly, in a manner that ends in a violent collision.
   • [T]he Japanese have organized a suicide corps of flyers whose mission is to crash-dive their explosives-laden aircraft into ships.1945 April 23, “World Battlefronts: Divine Tempests”, in Time, retrieved 25 Oct 2015

See all 8 meanings of crash dive