UNDERWATER FIGHTER I

Underwater fighter design. This is a craft that can be released from a submarine mothership in order to do battle at close range.
Inspired by japanese midget submarines from 1945.
Armament is based on a rotary eight-tube torpedo launcher device.
Propulsion are independent from air, and is based on a Walter turbine consuming Hydrogen Peroxide as an anaerobic source of steam power.
Crew is an Ultraman that has not the physical limitations of ordinary man.