RedactedNarrative: On Saturday, 03/27/21 at approximately 10:00 pm, vessel 1, a large, unknown vessel, was heading east on the New River in between Andrews Ave and SE 3rd Ave in Ft. Lauderdale, FL. Vessel 2, a 35 foot pontoon boat, was heading west on the New River in between Andrews Ave and SE 3rd Ave in Ft. Lauderdale. Vessel 1 was passing a different vessel that was ahead of it and did not notice Vessel 2 until they were about to collide. Vessel 1 and vessel 2 made evasive maneuvers to avoid a collision. Vessel 1 struck vessel 2 on the port stern with it's own port stern at a slow rate of speed. Immediately after the collision, both vessels stopped to assess damage. Vessel 2 tried raising vessel 1 over the radio, but received no answer. Vessel 1 fled the area and Vessel 2 was unable to gather enough identifying information on vessel 1. Vessel 2 went to the dock and reported the accident.