▁her ▁name ▁to ▁serve ▁in ▁the ▁Royal ▁Navy . ▁The ▁ship ▁was ▁assigned ▁to ▁the ▁ 4 th ▁Light ▁Cru iser ▁Squadron ▁in ▁the ▁East ▁Ind ies ▁between ▁ 1 9 2 5 ▁and ▁ 1 9 3 2 , ▁before ▁being ▁reduced ▁to ▁reserve ▁on ▁her ▁return . ▁She ▁is ▁mentioned ▁in ▁Ev ely n ▁W augh ' s ▁short ▁book ▁about ▁the ▁ 1 9 3 0 ▁coron ation ▁of ▁Ha ile ▁Sel ass ie ▁in ▁A by ss in ia ▁as ▁having ▁provided ▁her ▁Royal ▁Marine ▁band ▁for ▁the ▁occasion . ▁ ▁Modern isation ▁ ▁In ▁ 1 9 3 7 – 1 9 3 8 ▁E ff ingham ▁was ▁given ▁an ▁extensive ▁modern ization ▁which ▁rad ically ▁changed ▁her ▁appearance . ▁Her ▁bo ilers ▁were ▁reduced ▁from ▁ 1 2 ▁to ▁ 1 0 , ▁as ▁a ▁result ▁of ▁which ▁she ▁was ▁given ▁a ▁single ▁vertical ▁fun nel ▁in ▁place ▁of ▁the ▁two ▁ra ked ▁ones , ▁and ▁vertical ▁m asts . ▁Her ▁main ▁arm ament ▁was ▁changed ▁to ▁nine ▁B L ▁ 6 - inch ▁Mark ▁XII ▁guns ▁on ▁single ▁mount ings ▁CP ▁Mark ▁XIV , ▁with ▁three ▁super f iring ▁forward ▁in ▁' A ', ▁' B ' ▁and ▁' C ' ▁positions , ▁one ▁on ▁either ▁wing , ▁three ▁super f iring ▁a ft ▁in ▁' W ', ▁' X ' ▁and ▁' Y ' ▁positions , ▁and ▁the ▁nin th ▁gun ▁on ▁the ▁quarter deck ▁in ▁position ▁' Z '. ▁This ▁arrangement ▁necess itated ▁an