Double-walled vessel hull construction utilizing t-shaped subcom
Drag reducing device for barges
Drag reduction assembly for use with a boat hull
Drag reduction of water vehicles using gas created by electrolys
Drag reduction polymer ejection system for underwater vehicle
Drag reduction system and method
Drag-free hull for marine vessels
Drill barge transport by surface effect vehicles
Drilling vessel with handling means for drilling pipe
Drive installation in boats
Drive position signalling apparatus
Dual hull water bicycle
Dual setting under pressure relief system
Dual stability seal skirt system for air cushion vehicle
Dynamic ballast and stabilization system
Dynamic surface element for bodies moving through a fluid
Earth moving machinery made amphibious
Elevating pilothouse
Emergency air system for partially submerged vessels
Emergency bulk liquid cargo spill prevention system