RIB Astec Touring 750 Mercury Fourstroke 150 Karel Overlaet, RIB Advocate Test of the RIB Astec Touring 750 with Mercury Fourstroke 150 engine. That seems to me a little underpowered. RIB stands for Rigid Inflatable Boat. Others Also Read...RIB Ranieri International Cayman Sport Touring 26 - ReviewRIB Drop Test RIBCRAFT 30' ProfoundRoughneck 636 VFI Leasure Mods SlideshowRIB Ranieri Cayman Sport Touring 23 Review