Page:Popular Science Monthly Volume 90.djvu/667

 to Save English Shipping from the Ravages of U-Boats

���Submarine chasers being built for the British Admiralty at the rate of one a day. These sea- wasps have done yeoman service in the anti-submarine crusade. They are said to have assisted directly m the loss or capture of literally scores of submarines belonging to the enemy

���Photos © Int. Film Serv.

��The submarine chaser is eighty feet long, with a twelve-foot beam. The cruising radius is seven hundred miles at twenty- two miles per hour and fifteen hundred miles at fourteen miles per hour

��The motors are of five hundred horsepower and the sea-keeping qualities are such as to allow for a sea patrol of ten days duration. The English channel is regularly pa- trolled by these boats

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