Retractable propeller guard for outboard motor or stern...

Retractable step with secure locking mechanism

Retractable tow hook

Retractable wheel assembly

Retractable windshield for a boat

Retractable winshield for a boat

Retractile protected rudder

Retrieval device

Retriever

Retrieving device

Retrieving devices for submerged articles

Reverse gate for water jet apparatus

Reverse thrust propeller

Reverse thrust propellor

Reversible and self-adjusting propeller device

Reversible arming and firing mechanism for marine markers

Reversible camber airfoil

Reversible life raft comprising removable shelters

Reversible mechanical coupling, particularly for tensional...

Reversible, articulated mechanical coupling and relevant...