RedactedNarrative: Vessel 1 was heading north on the river. While mauevering a 180 degree turn, the operator was unable to make the full turn without using reverse. The operator shifted the vessel into forward gear and nothing happened. Due to the wind and the backward motion of the vessel, vessel 1 struck vessel 2. Vessel 1 had an Avon RIB inflatable with an outboard engine mounted on the inflatable. No Injuries.