RedactedNarrative: OPERATOR 1 WAS OPERATING VESSEL 1 WHILE DRIFTING. OPERATOR 2 WAS OPERATING VESSEL 2 WHEN THEY APPROACHED VESSEL 1, OPERATOR 2 SHUT THEIR ENGINE DOWN AND LOST STEERING ABILITY. VESSEL 2 COLLIDED WITH VESSEL 1 DUE TO SHUTTING THE ENGINE DOWN. THERE WERE NO INJURIES FOR VESSEL 1 OR 2.