RIB Astec Touring 750 Mercury Fourstroke 150 December 30, 2017February 7, 2023 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...The Fun of Owning a Rigid Inflatable Boat (RIB): 8 ThoughtsAstec RIB Yamaha 350 V8Roughneck 636 VFI Leasure Mods SlideshowMercury Unleashes New V10 400R High-Performance Outboard