Mark 16 torpedo
The Mark 16 torpedo was a redesign of the United States Navy standard Mark 14 torpedo to incorporate war-tested improvements for use in unmodified United States fleet submarines. The torpedo was considered the United States standard anti-shipping torpedo for twenty years; although significant numbers of Mark 14 wartime production remained in inventory. This hydrogen peroxide propelled, torpedo was long and weighed. The Mod 0 warhead contained of TPX explosive and was the most powerful conventional submarine torpedo warhead ever used by any Navy. The United States used TPX explosive which was about 75% more powerful than the Type 97 explosive in the larger Japanese Type 93 Mod 3. The Mod 1 warhead contained of TPX or HBX explosive. The torpedo could be set for straight- or pattern-running.