Could Britain sustain the French fleet abroad?

Could Britain and its partners afford to maintain and crew the French fleet?

Yes, if French crews evacuated with their ships; Allied and Commonwealth resources could sustain a force valuable enough to justify the cost.

The scenario assumes French crews leave with their ships, so Britain does not need to find replacement complements for an entire allied navy. Maintenance and provisioning would draw on British, Canadian, Dominion, Commonwealth, and wider imperial capacity. American supplies provide another industrial source even before full American belligerency. The fleet's operational value would justify the considerable expense of keeping it active.