A search and rescue operation is underway for a submersible touring the wreckage of the Titanic

Officials are in a race against time to find a civilian submersible that had five people aboard after it went missing Sunday in the North Atlantic while voyaging to the wreckage of the Titanic. The 21-foot vessel has four days of emergency capability, the leader of search and rescue efforts said Monday afternoon, as crews with the US and Canadian coast guards continued scouring the ocean’s surface about 900 miles east of Cape Cod and used sonar to listen for sounds far below the water, which is up to 13,000 feet deep in the area.