出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2010/03/15 03:37 UTC 版)
The Thunder fish, type 91 torpedo (modification 2), was a shallow water aerial torpedo that was designed for and used in the attack on Pearl Harbor in 1941. Conventional torpedoes when launched from aircraft would dive to 100 ft before turning up to hit their targets. The waters of the lagoon at Pearl Harbor were much shallower so wooden fins were added to allow for shallow launching at low altitude.