Shinyo (suicide motorboat)
The Shinyo (震洋, Shin'yō; "Sea Quake") were Japanese suicide motorboats developed during World War II. They were part of the wider Japanese Special Attack Units program. == History == Towards the end of 1943, in response to unfavorable progress in the war, the Japanese high command heard suggestions for various suicide craft.
Source: Wikipedia — Shinyo (suicide motorboat) (CC BY-SA 4.0)