A rigid-inflatable style motorboat is due to appear in Grand Theft Auto VI, seen carrying a group of fishermen across Watson Bay in an official screenshot of the Grassrivers. The navy-blue craft features inflatable tubes along the hull, a center-mounted helm, twin large outboards and a central glass sunroof, and it seems to be inspired by the Highfield Sport 900.
Vehicle data via GTA Wiki (Fandom), CC BY-SA 3.0.