The U 4 retained the design features of the U 2
Type
Engine 1 Siemens Sh 4
Dimensions Length  , height  ,  span  , wing area   ,
Weights Empty , loaded  , max. take off weight  
Performance Max.. speed  , cruising speed  , range , endurance  , service ceiling   , climb
Type Werk.Nr Registration History
D-203 Belonged to Bäumer Aero,Hamburg