RedactedNarrative: UNIT #2 WAS ADRIFT NEAR PIER #646. UNIT #1 WAS ATTEMPTING TO DOCK AT PIER #657. THE DRIVER OF UNIT #1 STATED HE DID NOT SEE ANY NAVIGATIONAL LIGHTS FROM UNIT #2. THE FRONT OF UNIT #1 STRUCK THE REAR AND ENGINE OF UNIT #2. THE OCCUMPANTS OF UNIT #2 STATED THEY OBSERVED UNIT #1 COMING AT THEM AND WAS YELLING AT UNIT#1 HOPING TO GET ITS ATTENTION. THE OCCUPANTS OF UNIT #2 ATTEMPTED TO SPEAK WITH THE LONE DRIVER/OCCUPANT OF UNIT #1 AND ONLY EXCHANGED A FEW WORDS. I OBSERVED DAMAGE TO THE REAR AND MOTOR OF UNIT #2. I OBSERVED DAMAGE TO TEH BOW AND STARBOARD BOW OF UNIT #1. PHOTOS OF THE DAMAGE WERE TAKEN.  THE DRIVER OF UNIT #1 STATE HE DID NOT THINK HE STRUCK UNIT #2.  UNIT #1 WAS CITED FOR THE FAILURE TO YIELD VIOLATION.