DEVICE FOR ENERGY TRANSMISSION TO SELF-CONTAINED UNDERWATER VEHICLE
NAVIGATIONAL RADIOOPTICAL ANGLE REFLECTOR OF DIRECTIONAL ACTION WITH LIGHT-REFLECTING FACES
NAVIGATION RADIO-OPTICAL GROUP REFLECTOR OF CIRCULAR ACTION
SUBMARINE HYDRO ACOUSTIC SUITE NOISE DIRECTION-FINDING SYSTEM
DEPTH-ACTIVATED SENSOR SWITCH AND METHOD OF SWITCHING IT OFF
RADIO-HYDROACOUSTIC BUOY ON MICROCONTROLLER WITH ACOUSTIC UNDERWATER COMMUNICATION UNIT
RADIO-HYDROACOUSTIC BUOY ON MICROCONTROLLERS WITH BASE DATA OF REFERENCE SIGNALS
TRAWL BOARD WITH FLOW ACCELERATOR TO INCREASE LIFTING CAPACITY