RedactedNarrative: Vessel 2 was at anchor and facing NNW.  Vessel 1, initially anchored near Vessel 2, began traveling SSE.  According to witnesses and the operator of Vessel 1, Vessel 1 struck the bow and, subsequently, port side of Vessel 2 due to the inattention of the operator of Vessel 1.  This accident occurred in the Gulf of Mexico, just south of Big Sarasota Pass and at the northern end of Siesta Key/Beach Access #7.