67 mph Rigid Inflatable Boat Humber 700 hp Karel Overlaet, RIB Advocate Join us on the Black Scorpion, a Humber 700 hp RIB. They hit 67 mph on the Menai Strait from Beaumaris to Puffin Island. Others Also Read...The Fun of Owning a Rigid Inflatable Boat (RIB): 8 ThoughtsInvictus 9 m Racing Humber Rigid Inflatable BoatBuilding a RIB from a "Rubber Boat" - 1st Hand Full StorySea Shepherd UK Launches its Latest Humber Rigid Inflatable Boat "Shadow"