Absolute sea surface elevation measuring buoy and measuring method
Absolute wave height measuring system and method based on ship-mounted wave height meter
Accurate positioning device for marine surveying and mapping
Accurate positioning device for underwater surveying and mapping and positioning method thereof
Acoustic communication buoy system for ocean observation
Air-drop type ocean data measuring device and data processing device
Air-drop typhoon sea area meteorological marine environment information measuring device
Algae cleaning roller structure for cleaning water surface
Algae removal ship for large-scale artificial water conveyance canal
All-hydraulically-driven amphibious clean-keeping ship driven by rubber crawler belt