Rohrbach Ro XI "Rostra"
|First flight 30th of October 1928. Parts from the Robbe II were used. Tested but the engines were not powerfull enough for the intended role as a trans atlantic mailcarrier|
|Type||3 + 5 seat flying boat intended to be used as a mail carrier cross the ocean|
|Engine||2 Gnôme-Rhône Jupiter VI|
|Dimensions||Length 15.60 m, height 6.30 m, span 26.90 m, wingarea 77.00 m2|
|Weights||Empty 4340 kg, load 4060 kg, payload 1250 kg, flying weight 8400 kg|
|Performance||Max. speed 213 km/h, cruising speed 158 km/h, landing speed 118 km/h, range 2370 km, service ceiling 3000 m|