We were on a St. Francis owned mooring ball for 2 weeks. The entire mooring pulled out on 3/5 at 1015pm and we quickly drifted and collided with a nearby vessel. Moorings were advertised as “helix driven moorings”, but a Manta Ray mooring anchor is what was still attached to the ball, tackle, and our boat. Dockmaster was apologetic and allowed us to stay at the marina at no additional cost for a few days while we assessed damages and made some repairs. He stated (as does their rental agreement) that they have no liability whatsoever. Area cruisers suggested this was the 4th failure in the past year. Dockmaster said the moorings are inspected every 6 months and that there has only been one incident due to an oversized motor yacht that piled out a mooring. We are a 41’ catamaran, well within the stated 45’ maximum length allowed.