Racing lower unit
Radial reefing mechanism for sails
Radial thrust apparatus for high thrust trolling motor
Raft inflation valve
Raft or boat
Rafting cushion
Ramp unit for floating pontoons
Rear extension for boat hull
Rear grip structure for a personal watercraft
Rear grip structure for a small boat
Rear opening boat lift canopy
Rebreather setpoint controller and display
Recesses on a surface
Rechargeable breathing apparatus particularly an apparatus...
Recondensation of gaseous hydrocarbons
Reconfigurable ocean-going vessel
Recovery apparatus
Recovery system for submerged instrument
Recreation water sled
Recreational boat