RedactedNarrative: While the anchor approx. 500ft off the beach in about 6ft of water, a 1973 22ft center console aqua-sport was taking on water by way of a defective/ unseated hull drain plug at the stern causing the bilge to fill with seawater. The operator attempted to start the motor and pull up the anchor when water in the bilge shifted to the one of the boat and to the stern causing the boat to take on more water and eventually capsizing. The operator and passenger went overboard. No injuries were reported. Tow Boat/ US responded to salvage the vessel and tow it to Towd Point Dock.