Underwater diving system
Underwater diving system
Underwater drysuit
Underwater equipment recovery
Underwater immersion installation
Underwater lifting balloon
Underwater light adaptor for single-hose diving regulators
Underwater propulsion device
Underwater vessel with improved propulsion and handling
Underwater viewing vessel
Underwater visibility device
Unsinkable bag-buoy unit
Upper arm swimming ring
Utility buoyant vest
Utility pocket for a life-jacket
Valve system for underwater diving equipment
Ventilated inflatable garments
Vessel and apparatus for at-sea retrieval of buoys and anchors
Vessel locating and raising mechanism
Vessel salvaging apparatus