Board Thread:Game Updates/@comment-3502824-20170701031142/@comment-26574811-20170730131346

Shinhwalee wrote: https://twitter.com/hata_mine/status/891542965876703232
 * Event Final Extra Operation Clear Reward is the British Aircraft Carrier (not 100% confirmed if Ark Royal)

According to this, the RN CV begins with a Japanese kana that ends with "A" (i.e. A, Ka, Ra, etc.) when translated into Japanese.

The only possible ones are HMS Argus, HMS Ark Royal and several Colossus-class CVs, but none of them except Ark Royal fits the silhouette of the island.

So yeah, now we're pretty much sure that it's Ark Royal.