SELF-PROPULSION TYPE WORK SHIP EQUIPPED WITH HEAVY MACHINE
FLOATING BODY FOR TSUNAMI EVACUATION AND AIR HOLDING FORMATION BODY
FLOATING BODY FOR TSUNAMI EVACUATION AND AIR HOLDING FORMATION BODY
HULL STOPPER DEVICE FOR VESSEL DURING MOORING ALSO USED AS VESSEL BOTTOM CLEANING RESIN PLATE
FRP-MADE THREE-DIMENSIONAL UNIT AND STRUCTURE AND FRAME USING THE SAME
CONNECTION METHOD, RECOVERY METHOD, AND CONNECTION/RECOVERY DEVICE OF MARINE HOSE