B4 type 1st class submarines




Displacement2800t surface
Length?
Width?
Draught?
Machinery2-shaft diesel and electoric motor, ?bhp surface, ?shp submerged
Speed22.4kt surface, ?kt submerged
Armament8-53cm TT, 1-14cm/40cal gun, 2-25mm AA, 1 aircraft
Complement?



(18 planned, cancelled in 1943)



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