This British 3-man recce aircraft was built to a 1937 specification, the first of two prototypes first flew September 1939. It's mission was to follow enemy surface fleets, especially by night. Visibility and crew comfort were it's main goals, maximum speed was 115 mph and it's duration was eleven hours. Of mixed-construction, four Pobjoy Niagra radials of 130 hp drove fixed pitch wooden props. None were ordered.