MANNED SUBMERSIBLE VEHICLE FOR UNDERWATER SIGHTSEEING AND EXPERIENCE
PIPING COVER PLATE OF UNDERWATER SAILING BODY AND UNDERWATER SAILING BODY
NAVIGATION RISK DISPLAY PROGRAM, AND NAVIGATION RISK DISPLAY SYSTEM
POSITION ACQUISITION DEVICE, OPERATION METHOD OF UNDERWATER VEHICLE AND POSITION ACQUISITION DEVICE
RUDDER CONTROLLER, UNDERWATER VEHICLE AND RUDDER CONTROL METHOD
SENSOR LAYING DEVICE, SYSTEM AND METHOD FOR ESTIMATING SOUND SOURCE OBJECT
TORPEDO DISPOSAL DEVICE WITH FLOATING BRIDGE FUNCTION
PROPULSION DEVICE FOR SUBMERGING/FLOATING OF SUBMARINE