▁A ▁tw in ▁ 4 . 5 - inch ▁( 1 1 3 ▁mm ) ▁Mark ▁ 6 ▁gun ▁mount ▁was ▁fitted ▁forward . ▁A ▁single ▁Sea ▁Cat ▁surface - to - air ▁miss ile ▁launch er ▁was ▁fitted ▁a ft ▁( on ▁the ▁Hel ic opter ▁hang ar ▁roof ), ▁while ▁two ▁O er lik on ▁ 2 0 mm ▁can non ▁provided ▁close - in ▁defence . ▁ ▁A ▁Lim bo ▁anti - sub marine ▁mort ar ▁was ▁fitted ▁a ft ▁to ▁provide ▁a ▁short - range ▁anti - sub marine ▁cap ability , ▁while ▁a ▁hang ar ▁and ▁ ▁hel ic opter ▁deck ▁allowed ▁a ▁single ▁West land ▁W asp ▁hel ic opter ▁to ▁be ▁operated , ▁for ▁longer ▁range ▁anti - sub marine ▁and ▁anti - sur face ▁operations . ▁ ▁As ▁built , ▁And rom eda ▁was ▁fitted ▁with ▁a ▁large ▁Type ▁ 9 6 5 ▁long ▁range ▁air ▁search ▁rad ar ▁on ▁the ▁ship ' s ▁main m ast , ▁with ▁a ▁Type ▁ 9 9 3 ▁short ▁range ▁air / sur face ▁target ▁indicating ▁rad ar ▁and ▁Type ▁ 9 7 8 ▁navigation ▁rad ar ▁carried ▁on ▁the ▁ship ' s ▁for em ast . ▁An ▁M RS 3 ▁fire ▁control ▁system ▁was ▁carried ▁to ▁direct ▁the ▁ 4 . 5 - inch ▁guns . ▁The ▁ship ▁had ▁a ▁son ar ▁suite ▁of ▁Type ▁ 1 8 4 ▁medium ▁range ▁search ▁son ar , ▁Type ▁ 1 6 2 ▁bottom ▁search ▁and ▁Type ▁ 1 7