▁down ▁at ▁the ▁Deutsche ▁Wer ft ▁( yard ) ▁in ▁Hamburg ▁as ▁yard ▁number ▁ 3 3 9 ▁on ▁ 7 ▁August ▁ 1 9 4 1 , ▁launched ▁on ▁ 3 0 ▁April ▁ 1 9 4 2 ▁and ▁commission ed ▁on ▁ 8 ▁July ▁with ▁Kap it än le ut nant ▁Walter ▁Frei herr ▁von ▁Ste inae cker ▁in ▁command . ▁ ▁U - 5 2 4 ▁began ▁her ▁service ▁career ▁with ▁training ▁as ▁part ▁of ▁the ▁ 4 th ▁U - bo at ▁Fl ot illa ▁from ▁ 8 ▁July ▁ 1 9 4 2 . ▁She ▁was ▁re - ass igned ▁to ▁the ▁ 1 0 th ▁fl ot illa ▁for ▁operations ▁on ▁ 1 ▁December ▁ 1 9 4 2 . ▁ ▁She ▁carried ▁out ▁two ▁pat rol s ▁and ▁s ank ▁two ▁ships . ▁She ▁was ▁a ▁member ▁of ▁three ▁w olf pack s . ▁ ▁She ▁was ▁s unk ▁in ▁March ▁ 1 9 4 3 ▁south ▁of ▁Made ira ▁by ▁an ▁American ▁aircraft . ▁ ▁Design ▁German ▁Type ▁IX C ▁sub mar ines ▁were ▁slightly ▁larger ▁than ▁the ▁original ▁Type ▁IX B s . ▁U - 5 2 4 ▁had ▁a ▁disp lacement ▁of ▁ ▁when ▁at ▁the ▁surface ▁and ▁ ▁while ▁sub mer ged . ▁The ▁U - bo at ▁had ▁a ▁total ▁length ▁of ▁, ▁a ▁pressure ▁h ull ▁length ▁of ▁, ▁a ▁beam ▁of ▁, ▁a ▁height ▁of ▁, ▁and ▁a ▁dra ug ht ▁of ▁. ▁The ▁sub marine ▁was ▁power ed