Model Variants (Including Prototypes)
Bv 138A - Planned Initial Production Model Designation; distinct tail surface design.
Bv 138A-1 - Initial Production Model fitted with Jumo 205D powerplants of 700hp each; redesigned tail surface and new hull design.
Bv 138B-0 - Second Production Models of which only six examples were produced.
Bv 138B-1 - Fourteen examples produced.
Bv 138C-1 - Definitive Bv 138 Model of which some 227 examples were produced.