RedactedNarrative: VESSEL 1 WAS ANCHORED FISHING AT THE DUNEDIN REEF ABOUT 6 MILES WEST OF DUNEDIN, FL. VESSEL 1 STARTED TO TAKE ON WATER AND SWIMMER 1 OBSERVED THE BILGE PUMP NOT OPERATING PROPERLY. SWIMMER 1 PULLED THE ANCHOR AND ATTEMPTED TO GET UNDERWAY BUT WATER WAS COMING ON BOARD TOO QUICKLY. SWIMMER 1 AND SWIMMER 2 ABANDONED THE VESSEL WHICH LATER CAPSIZED. SWIMMER 1 AND SWIMMER 2 DONNED PFD'S AND WERE REMOVED FROM THE WATER BY PINELLAS COUNTY SHERIFF'S MARINE UNITS UNINJURED.