If the French fleet arrived in British hands in 1940 without crews, which ships would be kept and how could they be manned?
Short answerHe would prioritise ships that arrived with their support infrastructure, use Canadian and Australian manpower where practical, and accept a long work-up period rather than treating the fleet as instantly usable.
NotesIn a counterfactual about the French fleet becoming available in 1940, manpower and logistics are the limiting factors. With spares and supplies, Canadian and Australian forces could form a base for working ships up, while experienced British crews would have to be dispersed carefully among newcomers. Canada would be especially useful for the battleships because its pool of English- and French-speaking sailors could ease the transition to French machinery and documentation. Bringing the whole force into effective service would still take about a year to eighteen months.