RADIO-HYDROACOUSTIC BUOY ON MICROCONTROLLER WITH ACOUSTIC UNDERWATER COMMUNICATION UNIT
TRAWL BOARD WITH FLOW ACCELERATOR TO INCREASE LIFTING CAPACITY
DEVICE FOR ATTACHMENT OF TOWING CABLE TO OPENING DEVICE
RADIO-HYDROACOUSTIC BUOY ON MICROCONTROLLERS WITH BASE DATA OF REFERENCE SIGNALS
NAVIGATIONAL RADIOOPTICAL ANGLE REFLECTOR OF DIRECTIONAL ACTION WITH LIGHT-REFLECTING FACES
SUBMARINE HYDRO ACOUSTIC SUITE NOISE DIRECTION-FINDING SYSTEM
METHOD AND DEVICE FOR ENSURING FISHING WITH THE HELP OF A FISHING VESSEL
NAVIGATION RADIO-OPTICAL GROUP REFLECTOR OF CIRCULAR ACTION
DEVICE FOR ENERGY TRANSMISSION TO SELF-CONTAINED UNDERWATER VEHICLE