Brest, Quiberon Bay, and the logistics of fleet concentration

A French fleet assembled at Brest would have needed large supplies of food and water while operating from an anchorage described here as historically unhealthy. Quiberon Bay is offered as a potentially better meeting point for Napoleon's scattered forces. That alternative carried its own history because Edward Hawke had won at Quiberon Bay, and France had not secured the area enough to remove the danger. This is a planning counterfactual rather than a claim about Napoleon's actual orders, but it shows how rendezvous geography and fleet sustainment could decide whether concentration worked at all.