The Curtiss P-2 Hawk was essentially a Curtiss P-1 modified with a V-1400 engine with an exhaust-driven turbo-supercharger. There were five P-2 aircraft built (S/N 25-420 through 25-424). The P-2s were ordered at the same time as the original 10 XP-1s. One year after completion, three P-2s were re-engined with Curtiss D-12, V-1150s and redesignated P-1s. The fourth P-2 (S/N 25-423) was re-engined with a Curtiss V-1570 Conqueror and became the XP-6.
TECHNICAL NOTES (for the XP-2): Engine: Curtiss V-1400 of 600 hp with exhaust-driven turbo-supercharger Maximum speed: 180 mph Ceiling: 22,950 ft. Range: 400 miles Length: 22 ft. 10 in. Span: 31 ft. 7 in. Height: 8 ft. 7 in.