Martin Mariner U.S. NAVY'S NEW FAST FLYING BOAT. Described by the U.S.

Martin Mariner U.S. NAVY'S NEW FAST FLYING BOAT. Described by the U.S. Navy as the fastest flying boat ever built in America, this monster of the skies is shown in a test flight somewhere on the U.S. west coast. The patrol plane, designed for both cargo and combat duty, will go into mass production at a plant in the southern part of the country, two 2,000 horsepower engines power the plane, which is 74 feet long, 25 feet high and weighs about 25 tons.