Fast, luxurious ocean liners, recently designed for the United States Maritime Commission, are intended-primarily to-serve peacetime needs, but can be converted into fully equipped airplane carriers within a short time in case of emergency. Planned for operation between San Francisco and the orient, the vessels will carry 1,000 passengers and have a speed of twenty-four knots. With a displacement of over 30,000 tons, and a length of 760 feet, the ships are said to be larger than any ever built in America.