<Snipped quote by Ithradine>
I'm tempted to make two characters now so I can pull off a merge.
It's certainly possible in the future. For now, just focus on one making one character.
@Ammokkx
The supreme flagship of the Fleet of Fog is the battleship Yamato. When the Admiralty Code is not present, which is almost always, Yamato has complete command over the entire fleet. The Fleet of Fog itself is divided among several smaller fleets focused on guarding specific bodies of land. For example, in the Anime there are the 1st and 2nd Oriental Fleets that blockade Japan. They are led by the flagships Nagato and Kongo respectively. The Fleet of Fog will not attack anything on land but any airfact, spacecraft, or ship will be destroyed by them. The Yamato gave Fog ships the ability to create mental models in the hope of copying Humanity's tactical sense.
The reasons around why a Fleet of Fog ship might defect revolve around the mental model they possess. They were intended to help mimic a specific way of of human thinking but have also allowed the ships to take on a personal identity. Interaction with a Mental Model no longer connected to the Fleet of Fog or having a conversation with a empathetic human are enough to shift their views. For Shinano, she first began combing through human history in boredom after the battle of 2049. This caused her to begin thinking of activities outside of battle. Another caused might be that one of the Fleet of Fog ships had a close bond to one in the Phantom Fleet, and wanted to be with them. It possible they simply asked to be let in or fought them to release the ship, only to be defeated and resign to tagging along.