Ocean Craft Marine Amphibious Rigid Inflatable Boat Karel Overlaet, RIB Advocate Have a look at the different sizes of the robust 4WD Ocean Craft Marine Amphibious Craft that drive on land and on water. OCM Amp can be fully customizable by hull type, colour, seating configuration, accessories and options. Others Also Read...How to Buy a Rigid Inflatable Boat (RIB) : 10 ThoughtsOcean to Ocean RIB AdventureBlack Diamond's New OCM RIB Police EnforcementThe Fun of Owning a Rigid Inflatable Boat (RIB): 8 Thoughts