RedactedNarrative: The operator and occupant stated they anchored at Mashta Point. While swimming at the sandbar the operator noted the stern of his vessel was sitting low in the water. The operator and his occupant got back on board and noticed there was water on the stern of the vessel. The operator immediately turned on the vessel and the occupant picked up the anchor. As the operator attempted to drain the water by picking up speed, one of his engines malfunctioned causing his wake to come into the vessel at the stern. This additional water caused the vessel to list towards the starboard side. As a result of the bilge pumps not working and additional wake from neighboring vessels at the sandbar, the vessel capsized.