Ship abutting berthing device and berthing method thereof
Maritime emergency communication buoy for retrieving marine survey equipment
Underwater detection device based on multi-beam sonar and offshore ad hoc network buoy
Bionic flexible fin ray based on tensegrity structure and design method thereof
Overwater distance surveying instrument for surveying and mapping based on Beidou system
Auxiliary device for landing of helicopter on uneven ground
Submersible locking mechanism and operation method thereof
Sonar surveying and mapping system based on surf algorithm