Type a b W seaplane
Engine 1 BMW VI 7,3 Z
Dimensions Length 8,24 m , height  3,2 m,  span upper 11,0 m, lower 8,6 m , wing area  27,2 m2 , Length  8,57 m, height  4,6 m, span upper 11,0 m, lower 8,6 m , wing area  27,2 m2 ,
Weights Empty 1470 kg, loaded 1950 kg , max. take off weight   , fuel 220 l Empty 1510 kg, loaded  1970 kg, max. take off weight   fuel 220 l
Performance Max.. speed at sea level  325 km/h, landing speed 90 km/h,  cruising speed  , range 700 km, endurance  , service ceiling  8000 m , climb to 1000 m 1,4 min., to 2000 m 3,0 min., to 3000 m 5,9 min., Max.. speed  at sea level 310 km/h, landing speed 100 km/h, cruising speed  , range 680 km, endurance  , service ceiling  7500 m , climb to 1000 m 1,5 min., to 2000 m 3,9 min., to 3000 m 6,4 min.,
Type Werk.Nr Registration History
a 371 D-2363, D-IREH First flight 1932
b The second prototype followed in February 1933, with a modified fuselage to make ilonger
c = He 51 a Modified landing gear. Prototype for He 51