RedactedNarrative: V1 and V2 were both traveling north upriver when V2 made a sharp left turn to port. V1 did not see V2 turn until V2 was directly in front of them. V1 did not have time to react and impacted V2 near the port side gunwale, causing V1 to ramp up and impact V2 Operator's left leg/lower back with its hull and coming down on the hood of V2 causing severe fiberglass/mechanical damage. Rental company estimated damage to be $6000.00 and deemed V2 as totalled.