▁Lor ient ▁on ▁ 1 5 ▁April ▁after ▁sp ending ▁ 5 0 ▁days ▁in ▁the ▁North ▁Atlantic , ▁and ▁left ▁on ▁another ▁pat rol ▁on ▁ 7 ▁June . ▁While ▁crossing ▁the ▁Bay ▁of ▁B isc ay , ▁she ▁was ▁attacked ▁by ▁an ▁Australian ▁Short ▁S under land ▁aircraft ▁from ▁No . ▁ 1 0 ▁Squadron ▁RA AF . ▁U - 1 0 5 ▁sought ▁shelter ▁in ▁Fer rol , ▁Spain ▁and ▁did ▁not ▁leave ▁until ▁ 2 8 ▁June , ▁when ▁she ▁depart ed ▁for ▁Lor ient , ▁which ▁she ▁reached ▁on ▁the ▁ 3 0 th . ▁The ▁attack ▁apparently ▁caused ▁serious ▁damage , ▁as ▁she ▁did ▁not ▁sail ▁again ▁until ▁ 2 3 ▁November . ▁During ▁this ▁period , ▁Ober le ut nant ▁zur ▁See ▁Hans - Ad olf ▁Schwe ich el ▁was ▁put ▁in ▁command ▁of ▁the ▁boat , ▁but ▁did ▁not ▁undert ake ▁any ▁pat rol s ▁and ▁was ▁replaced ▁by ▁Ober le ut nant ▁zur ▁See ▁J ürgen ▁N issen , ▁under ▁whose ▁command ▁U - 1 0 5 ▁left ▁Lor ient . ▁ ▁While ▁pat rolling ▁the ▁North ▁Atlantic ▁she ▁succeeded ▁in ▁s inking ▁three ▁British ▁merchant ▁ships ; ▁Or for ▁ ▁on ▁ 1 4 ▁December ▁ 1 9 4 2 , ▁C . S . ▁Fl ight ▁on ▁ 1 2 ▁January ▁ 1 9 4 3 , ▁and ▁British ▁V ig il ance , ▁part ▁of ▁Con voy ▁T M ▁ 1 , ▁on ▁ 2 4 ▁January , ▁as ▁well ▁as