Gemini 650 RIB Trialing Karel Overlaet, RIB Advocate Gemini is a strong South African RIB brand from 1979. This Gemini 650 Rigid Inflatable Boats has a slim line and ultra-modern hull shape. It has already proved to be an instant bestseller. Others Also Read...What BERTHON Can Do with a GEMINI RIBTwo GEMINI 650's for NorwayGEMINI Unveiled Latest Ranges of the New WR720The Fun of Owning a Rigid Inflatable Boat (RIB): 8 Thoughts