▁tw in ▁ 2 0   mm ▁O er lik on ▁mount s ▁replaced ▁the ▁single ▁O er lik ons ▁during ▁the ▁war . ▁Up ▁to ▁ 1 1 0 ▁depth ▁charges ▁could ▁be ▁carried . ▁The ▁ship ▁had ▁a ▁complement ▁of ▁ 1 6 8 ▁officers ▁and ▁men . ▁ ▁Royal ▁Navy ▁service ▁After ▁rect ification ▁of ▁defect s ▁found ▁during ▁the ▁ship ' s ▁sea ▁tri als , ▁Oak ley ▁ ▁sa iled ▁for ▁Sc apa ▁Flow ▁in ▁the ▁Or k ne ys ▁on ▁ 2 2 ▁June ▁ 1 9 4 2 , ▁and ▁took ▁part ▁in ▁esc ort ing ▁a ▁min el ay ing ▁operation ▁and ▁in ▁a ▁di version ▁operation ▁intended ▁to ▁dist ract ▁German ▁att ent ions ▁from ▁the ▁Ar ctic ▁Con voy ▁P Q ▁ 1 7 . ▁After ▁completion ▁of ▁these ▁operations , ▁Oak ley ▁completed ▁working ▁up ▁her ▁crew , ▁becoming ▁a ▁part ▁of ▁the ▁Or k ney ▁and ▁Sh et land ▁Command , ▁where ▁her ▁main ▁duties ▁consisted ▁of ▁esc ort ing ▁con vo ys ▁to ▁and ▁from ▁the ▁Far oe ▁Islands . ▁In ▁September ▁ 1 9 4 2 , ▁the ▁Royal ▁Navy ▁sa iled ▁the ▁next ▁major ▁supply ▁con voy ▁to ▁the ▁Soviet ▁Union , ▁Con voy ▁P Q ▁ 1 8 , ▁and ▁Oak ley ▁was ▁again ▁involved ▁in ▁support ▁operations ▁for ▁the ▁con voy . ▁It ▁was ▁decided ▁to ▁set ▁up ▁a ▁temporary ▁ref uel ing ▁base ▁for ▁the ▁con voy ' s ▁esc ort s ▁at ▁L owe