Quick wire coupling and release
Radial depressor
Reciprocating barge coupling device
Recoverable tethered platform system
Recreation water sled
Remote-controlled submersible drogue
Remotely-controllable paravane
Retractable towing shackle
Rider support assembly for parasailing
Rigging apparatus
Rigid mooring arm quick disconnect
Ring paravane
Riser pipe fairing
Safety device for water skiing
Safety line harness
Safety release for water skiing tow line
Safety release for water skiing tow line
Sea going barge train
Sea vessel retrieval of unmanned underwater vehicles
Seagoing composite barge-tug vessel