The Nagasaki Dinghy is a rigid inflatable boat appearing across Grand Theft Auto IV, V, and Online, and it is due to appear in Grand Theft Auto VI. Throughout the HD Universe it closely resembles a military rigid-hulled inflatable boat such as the Naval Special Warfare RHIB, with lifeline ropes and rubbing-strake protection around the hull.
Vehicle data via GTA Wiki (Fandom), CC BY-SA 3.0.