9 ▁added ▁to ▁her ▁t ally ▁when ▁she ▁s ank ▁the ▁tiny ▁four - m asted ▁sail ing ▁vessel ▁James ▁E . ▁New son ▁off ▁the ▁United ▁States ' ▁se ab o ard ▁with ▁her ▁guns . ▁She ▁s ank ▁a ▁further ▁three ▁ships ▁that ▁month , ▁making ▁use ▁of ▁the ▁" Second ▁Happy ▁Time " ▁to ▁add ▁to ▁her ▁score . ▁ ▁On ▁one ▁of ▁them , ▁L ise , ▁the ▁first ▁mate , ▁the ▁Norwegian ▁H ang ar ▁Ly ng å s , ▁surv ived ▁a ▁total ▁of ▁four ▁tor ped o ings . ▁▁ 9 th ▁pat rol ▁and ▁SS ▁Car ib ou ▁E as ily ▁the ▁most ▁controvers ial ▁action ▁by ▁U - 6 9 ▁was ▁the ▁destruction ▁of ▁the ▁civil ian ▁fer ry ▁ ▁in ▁the ▁Cab ot ▁Stra it ▁at ▁ 3 : 2 1   a . m . ▁Atlantic ▁Summer ▁Time , ▁on ▁ 1 4 ▁October ▁ 1 9 4 2 . ▁The ▁sub marine ▁had ▁been ▁in ▁the ▁area ▁for ▁a ▁few ▁days , ▁and ▁s ank ▁the ▁SS ▁Carol us ▁the ▁day ▁before , ▁with ▁the ▁loss ▁of ▁eleven ▁lives . ▁Early ▁that ▁morning , ▁Car ib ou ▁was ▁sp otted , ▁primarily ▁because ▁her ▁coal - f ired ▁steam ▁bo ilers ▁em itted ▁a ▁long ▁solid ▁black ▁smoke ▁trail , ▁and ▁was ▁sil hou ett ed ▁against ▁the ▁ph osph ores cent ▁sky . ▁While ▁sitting ▁in ▁wait ▁on ▁the ▁surface , ▁Gr ä f ▁launched ▁one ▁tor ped o .