A direct British attack on Brest was unattractive because of its defences and garrison. The port nevertheless depended on provisions and material moved along the French coast, and contemporary roads could not readily replace that traffic. Canal construction faced technical, geographic, and financial limits, leaving sea transport central to the base's survival. A squadron outside Brest could weaken the base by interrupting the supply system that kept its fleet viable, without attempting to storm the fortifications.
Notable Point · 14:45-17:29
Brest's weakness: dependence on coastal supply
Brest was heavily fortified but depended on coastal convoys, giving a blockading force leverage over the base itself.