Vessel was anchoring itself and was stopped but adrift in tidal current. Anchor line got caught under vessel in transom, and an audible noise was heard. The vessel took on water and sank. 
On 06/08/2023 at 1813 hours FWC was dispatched to the St. Augustine Inlet in reference to a boating accident. 
I arrived by patrol vessel to the fuel dock at the St. Augustine Municipal Marina and made contact with the owner/operator. He advised he was operating his vessel but stopped, adrift in the current just inside the inlet. He stated an occupant threw anchor off the bow and the line got caught up under his vessel around the transom. He stated he heard a loud audible noise then began taking on water. No one was injured nor ejected from the vessel. He stated the current swung his vessel around in a manner which caught his anchor line causing something to break underneath on the hull/transom area. 
I spoke with them, and they advised the same story as the captain of the vessel. No one was injured, and no other vessel was involved. PAX stated he bumped into a green channel marked as they were sinking in the current. There was no other reported property damage besides the single vessel involved. 
Vessel was considered a total loss. Damage amount was unable to be determined.
St. Augustine Inlet
VILLANO BEACH                 