It's the...

[Joe CalPo]

Had a Nimitz, had the planes and guns in the spares box, finally put them all together.

It's later in the war. All the jets are spent due to spares, along with Sea Sparrow and Phalanx.
Yes, there's a liaison aboard from the Royal Navy.

The planes will be reused for a real world project in due course. Not sure what to do next with Nimitz.

[Steel Penguin]

nice! 
possibly could do with a TARDIS in the lee of the tower 

[kerick]

That backstory is going to be the size of a novel!

[scooter]

I've seen this movie before
You cannot view this attachment.

[kerick]

Wasn't that called the Final Countdown? (makes google check)
Yes, yes it was.

[Old Wombat]

What Joe has done is take the story of "The Final Countdown" & changed the ending.

Instead of the USS Nimitz returning to 1980, it remains in 1941.

As Nimitz was brought back to the "present" of 1980 after several aircraft had been launched for an attack on the Japanese fleet but before they had left the immediate vicinity of the aircraft carrier, one can only assume that the attack (in Joe's version) was carried out, with the entire fleet being destroyed, & the direction of WW2 following a completely different path ... Along with the whole post-war time-line.

[Joe CalPo]

What Old Wombat said.  Knew this lot would get it.

The storm, or time funnel, misses Nimitz (picking up other ships instead to balance conservation of energy and mass - someday future builds, already started stories.)

In short Nimitz's airgroup is able to blunt, but not entirely stop, the attack on Pearl, and sinks the 6 carriers and a few others for good measure.
Staying far offshore out of sight, she tries to warn about the other attacks, but as per OTL the Philippines commander doesn't ready and those other Japanese attacks.
Her foreknowledge/intelligence, once the commanders at Pearl are convinced, is relayed to  manage to save PoW and Repulse.

Roosevelt refuses to use nukes, if Nimitz had on board - still a secret/matter of debate.

USS Nimitz and Enterprise go save Wake and Guam, which uses up Nimitz' stock of guided weapons and jet fuel.

After that she becomes a really big carrier, while her crew provide technical, medical, and historical knowledge that shorten the war considerably. Torpedo detonator pins, design improvements to ships, planes, armor, plus medicine - vaccines, antibiotics, surgical and diagnostic techniques.

Big battles around the Philippines in 1943 essentially end the IJN.