▁tor ped o ed ▁the ▁ 7 , 0 3 4 - ton ▁ste amer ▁, ▁killing ▁one ▁British ▁se aman , ▁and ▁inf lic ting ▁damage , ▁none ▁severe ▁enough ▁to ▁keep ▁her ▁victim ▁from ▁reaching ▁port . ▁U - 9 2 ▁returned ▁to ▁K iel ▁on ▁ 2 3 ▁March . ▁▁ 3 rd ▁Pat rol ▁After ▁ref it , ▁U - 9 2 ▁depart ed ▁on ▁her ▁third ▁pat rol ▁ 2 4 ▁April . ▁She ▁was ▁again ▁assigned ▁to ▁the ▁south west ▁Ireland ▁station , ▁by ▁way ▁of ▁Hel ig ol and , ▁the ▁K iel ▁Canal , ▁the ▁Balt ic , ▁Den mark , ▁Scotland , ▁and ▁Fair ▁Is le . ▁On ▁this ▁long ▁pat rol , ▁from ▁which ▁she ▁returned ▁to ▁Wilhelm sh aven ▁on ▁about ▁ 2 8 ▁May ▁( Ro om ▁ 4 0 ▁was ▁uncertain ▁of ▁the ▁date ), ▁she ▁was ▁attacked ▁three ▁times ▁by ▁enemy ▁A / S ▁forces ▁( and ▁once ▁more ▁by ▁pat rol ▁se ap lane ), ▁and ▁again ▁scored ▁no ▁success es . ▁On ▁his ▁return , ▁after ▁his ▁third ▁consecutive ▁dry ▁pat rol ▁and ▁in ▁keeping ▁with ▁usual ▁pract ise ▁for ▁un product ive ▁ski ppers , ▁K pt lt .. ▁B iel er ▁was ▁rel ieved .< ref > K o er ver , ▁Room ▁ 4 0 , ▁Vol ▁ 1 , ▁Fle et ▁in ▁Action .</ ref > ▁▁ 4 th ▁Pat rol U - 9 2 ▁returned ▁to ▁Ireland ▁station ▁for ▁her ▁fourth ▁pat