Russ RIB 750GTR Fly By 60 Knots Karel Overlaet, RIB Advocate This Russ RIB 750GTR runs at 50 knots in a swell. This fly by is at 60 knots. A RIB is a Rigid Inflatable Boat. Others Also Read...The Fun of Owning a Rigid Inflatable Boat (RIB): 8 ThoughtsRIB Photo Contest 2023 Crowns Its WinnersThe 5 Basic Marine Knots You Should KnowBSC 85 RIB Test