▁D und ee ▁was ▁a ▁steam ▁passenger ▁and ▁cargo ▁ship ▁of ▁the ▁British ▁Mer chant ▁Navy . ▁She ▁served ▁during ▁the ▁First ▁World ▁War ▁and ▁was ▁lost ▁in ▁ 1 9 1 7 . ▁ ▁Career ▁▁▁ ▁D und ee ▁was ▁built ▁by ▁C aled on ▁ship build ers ▁at ▁their ▁D und ee ▁yards ▁and ▁was ▁launched ▁on ▁ 2 4 ▁August ▁ 1 9 1 1 . ▁She ▁was ▁completed ▁in ▁November ▁ 1 9 1 1 ▁and ▁entered ▁service ▁with ▁the ▁D und ee , ▁Per th ▁& ▁London ▁Sh ipping ▁Company ▁and ▁sa iled ▁for ▁them ▁until ▁the ▁out break ▁of ▁World ▁War ▁I ▁in ▁ 1 9 1 4 , ▁when ▁she ▁was ▁requ is ition ed ▁for ▁use ▁as ▁an ▁armed ▁board ing ▁ste amer ; ▁as ▁such , ▁she ▁was ▁not ▁a ▁fully ▁commission ed ▁war ship ▁of ▁the ▁Royal ▁Navy ▁and ▁did ▁not ▁carry ▁the ▁" H MS " ▁prefix . ▁On ▁ 1 6 ▁March ▁ 1 9 1 7 ▁she ▁was ▁working ▁in ▁the ▁Atlantic ▁Ocean ▁with ▁Royal ▁Navy ▁arm oured ▁cru iser ▁ ▁when ▁they ▁stopped ▁the ▁dis gu ised ▁Imperial ▁German ▁Navy ▁auxili ary ▁cru iser ▁. ▁D und ee ▁sent ▁out ▁a ▁boat ▁to ▁inspect ▁Leop ard , ▁upon ▁which ▁Leop ard ▁opened ▁fire ▁and ▁forced ▁D und ee ▁to ▁move ▁away . ▁Ach illes ▁then ▁opened ▁fire ▁on ▁Leop ard , ▁s inking ▁her . ▁ ▁On ▁ 2 ▁September ▁ 1 9 1 7 , ▁the ▁German ▁sub