Britain's New Flying "Battleships" The "Sunderland," flagship of the new fleet of flying "battleships," about to take off from Felixstowe, Suffolk, to-day, She will be on view there to-morrow - Empire Air Day. Britain is to build an air navy-of "flying battleships," giant airboats capable of 3,000-mile ocean cruises, carrying bombs and guns. They will be fitted with revolving gun turrets in the tail. Next Month, the Sunderland, flagship of the new fleet, is to make a demonstration cruise to Sing