Coast Guard rescue crews were searching Thursday evening for a boater believed to be missing in Lake Pontchartrain.
Clyde Naquim radioed a mayday call to the Coast Guard, saying that his 30-foot cabin cruiser was taking on water.
Naquim said he was putting on his life jacket but then never returned to the radio.
The Coast Guard said it was searching by air and water for Naquim in the lake near South Shore Harbor Marina.
The Coast Guard said crews would continue the search throughout the night.