Merchant ships may be converted quickly and cheaply into aircraft carriers if the invention of John B. Quinn receives Navy approval. He proposes to crown the ships with a “lattice deck” built of parallel tubes on which airplanes could land and take off. The planes would be fitted with, wide-tread wheel-and-roller landing gears to prevent them from settling between the tubes, and it is said that the “grip” of the wheels upon the tubes would keep planes from slipping side-wise. The inventor estimates the entire deck, made of eight-inch pipes and supported by steel girders, installed on a 400-foot freighter, would weigh only 300 tons.