Underwater vessel with improved propulsion and handling
Underwater viewing vessel
Underwater visibility device
Underwater window for vessels
Unitary buoy
Universal depth boat
Universal kayak/canoe paddle
Universal platform for human powered floatation devices
Universal synchronous marine navigation light system
Unknown
Unloading means for bulk material
Unloading system
Unloading-, loading- and mooring device
Unmanned ocean vehicle
Unsinkable bag-buoy unit
Uplift spring assembly to compensate for hull deflection at...
Upper arm swimming ring
Utility buoyant vest
Utility distribution system for floating piers
Utility distribution system for marine floats