The following is an extract from the 1937 Manual of Seamanship Chapter II which gives clear instruction of what to fly and where. With Ramsey being onboard for a short duration and obviously the senior officer afloat his Admirals flag would have dispaced the commissioning pennant as described below and Ikes flag would have been on the starboard yard arm as described earlier.(Ithink)
"A commissioning pennant, or masthead, which a warship flies from its masthead and indicates the commission of the captain of the ship (and thus of the ship itself). The commissioning pennant may be displaced by various rank flags, namely the flags or pennants of Admirals or commodores, and the personal flags of heads of state and members of royal families".
This was still the case when I left the Andrew !!!