Hi Msea,
Your almost 100% right they 'should' be Walrus's, but I can tell you for sure that they are not anything remotely like a Walrus. These are not pusher aircraft, but tractor engine, large cylinder cowling, square winged, unequal span, definitely not Walrusesque.
According to Owen Thetford's British Naval Aircraft since 1918, the Walrus WAS operated by the 'Prince of Wales', however the Blackburn Shark (Floatplane version) was operated by Renown, Repulse, and Warspite type of Warships, but Prince of Wales is not mentioned.
I think some Msea intervention is required.................
Gosh, cannot believe I said that. What will come next???
Cheers,
Bigkev