2   mm )) ▁gun ▁and ▁two ▁quad ru ple ▁Mark ▁I ▁mount s ▁for ▁the ▁Q F ▁ 0 . 5 - inch ▁V ick ers ▁Mark ▁III ▁machine ▁gun . ▁She ▁was ▁fitted ▁with ▁two ▁above - water ▁quad ru ple ▁tor ped o ▁t ube ▁mount s ▁for ▁ 2 1 - inch ▁tor ped o es . ▁One ▁depth ▁charge ▁rail ▁and ▁two ▁throw ers ▁were ▁fitted ; ▁ 2 0 ▁depth ▁charges ▁were ▁originally ▁carried , ▁but ▁this ▁increased ▁to ▁ 3 5 ▁shortly ▁after ▁the ▁war ▁began . ▁ ▁Career ▁D ain ty ▁was ▁ordered ▁on ▁ 2 ▁February ▁ 1 9 3 1 ▁under ▁the ▁ 1 9 3 0 ▁Naval ▁Est im ates ▁and ▁was ▁laid ▁down ▁at ▁the ▁yards ▁of ▁the ▁Fair field ▁Sh ip building ▁and ▁Engineering ▁Company , ▁G ovan , ▁Scot st oun ▁on ▁ 2 0 ▁April ▁ 1 9 3 1 . ▁She ▁was ▁launched ▁on ▁ 3 ▁May ▁ 1 9 3 2 ▁and ▁completed ▁on ▁ 2 2 ▁December ▁ 1 9 3 2 , ▁at ▁a ▁total ▁cost ▁of ▁£ 2 2 9 , 3 7 8 , ▁ex cluding ▁equipment ▁supplied ▁by ▁the ▁Admir alty , ▁such ▁as ▁weapons , ▁am mun ition ▁and ▁wireless ▁equipment . ▁ ▁The ▁ship ▁was ▁initially ▁assigned ▁to ▁the ▁ 1 st ▁Dest roy er ▁Fl ot illa ▁in ▁the ▁Mediter rane an ▁and ▁made ▁a ▁brief ▁deployment ▁to ▁the ▁Pers ian ▁G ulf ▁and ▁Red ▁Sea ▁in ▁October