RedactedNarrative: On 7/4/2018, at approximately 0725 hours, V1 approached the port side of V2 (24ft Rampage). V2 was at anchor approximately 75 yards west from the west jetty of St. Andrews Pass. V2 is a commercial vessel and was selling fishing bait. V1 approached the port side of V2 and conducted a transaction with V2. After purchasing the bait, V1 attempted to back away from V2. At the same time, a vessel was approaching from the rear of both vessels. The operator of V1 throttled to forward gear after having had the vessel in reverse gear causing his vessel bow and anchor to hit the aluminum tower of V2 near the port stern.