ANTI-FOULING SYSTEM USING ENERGY COLLECTED FROM SALT WATER
RADIO-HYDROACOUSTIC BUOY ON MICROCONTROLLER WITH ACOUSTIC UNDERWATER COMMUNICATION UNIT
RADIO-HYDROACOUSTIC BUOY ON MICROCONTROLLERS WITH BASE DATA OF REFERENCE SIGNALS
DEVICE FOR SIMULATED ICE COVER CHANNEL FORMING IN ICE TEST POOL
DEVICE FOR TOWING TESTS OF SCALE MODELS FOR SURFACE SHIPS OPEN WATER BODY
METHOD FOR SELF-PROPELLED MODEL TESTS OF SHIPS IN ICE TEST BASIN
NAVIGATIONAL RADIOOPTICAL ANGLE REFLECTOR OF DIRECTIONAL ACTION WITH LIGHT-REFLECTING FACES