In 1943, Japan designed a "Suicide Human Torpedo" known as the "Kaiten. Approved for operations in 1944 they were the first of "special attack" weapons designed for operational "Certain Death Missions" for the "pilot". These human torpedoes followed the Japanese "Kamikaze Attacks" by approximately (30) days. The first suggestions of proposals were for the provision of the survival of the crew. After Japan faced defeat at the Marianas, June 1944, this defeat led to further evaluation and high-command acceptance of the crew-member or (pilot) death, as an inevitable consequence of the operation of the "Kaiten Human Torpedo's useages.