The aircraft, to be capable of carrying heavy armament, was estimated to have an all-up weight of 21,450 pounds (9,750 kilogrammes) and was to be powered by six 140 hp 104 kW) engines driving three propellers, two of which were to be of tractor configuration and the third a pusher.

It was planned to be powered by four tractor 250 hp (187 kW) Curtiss V-4 engines installed individually on the middle wing, which was unusual for the time.

[clarification needed] The crew of two pilots and a flight engineer were provided with an enclosed cabin, similar to the Curtiss Model H. To reduce the forces a pilot would need to use on the controls, small windmills could be connected to the aileron cables by electrically operated clutches to act as a form of power assisted controls.

[1] As the planned Curtiss V-4 engines were not available when the prototype was completed, it was decided not to fly the aircraft in the United States, but to take it to England by ship.

[7] The Wanamaker Triplane did however, provide the inspiration for John Porte of the Seaplane Experimental Station to build a massive five-engined flying boat of similar layout, the Felixstowe Fury.