▁of ▁conventional ▁configuration , ▁with ▁slightly ▁st agger ed ▁wings ▁using ▁wing ▁war ping ▁for ▁roll ▁control , ▁tan dem ▁open ▁co ck p its ▁and ▁F ok ker ' s ▁distinct ive ▁comma - sh aped ▁rud der . ▁ ▁The ▁W . 3 ▁/ ▁W . 4 ▁was ▁a ▁float plane ▁version ▁of ▁the ▁M . 7 . ▁ ▁Oper ational ▁history ▁ ▁The ▁aircraft ▁was ▁operated ▁by ▁the ▁Aust ro - H ung arian ▁forces ▁under ▁the ▁design ation ▁Type ▁B . I , ▁following ▁the ▁German ▁Empire ' s ▁letter ed ▁prefix es ▁from ▁the ▁Id fl ieg ▁aircraft ▁design ation ▁system . ▁ ▁Vari ants ▁ ▁M . 7 ▁: ▁Two - se at ▁reconna issance ▁aircraft ▁version . ▁ ▁W . 3 ▁: ▁Possible ▁mis ident ification ▁of ▁the ▁W . 4 ▁ ▁W . 4 ▁: ▁Two - se at ▁reconna issance ▁float plane ▁version . ▁ ▁Oper ators ▁ ▁Kaiser liche ▁Marine ▁ ▁Imperial ▁and ▁Royal ▁A viation ▁Tro ops ▁ ▁Spec ifications ▁( M . 7 ) ▁ ▁See ▁also ▁ ▁Notes ▁ ▁References ▁▁▁▁▁▁ ▁Category : 1 9 1 0 s ▁German ▁military ▁reconna issance ▁aircraft ▁M . 7 ▁Category : S es qui plan es ▁Category : Single - eng ined ▁tra ctor ▁aircraft ▁Category : Rot ary - eng ined ▁aircraft <0x0A> </s> ▁Harry ▁D ing ley ▁( 1 9 ▁April ▁ 1 9 0 3 ▁– ▁ 2 0 ▁August ▁ 1 9 8 8 ) ▁was ▁a ▁British ▁box