Were French warships unsuited to long voyages?
Short answerThey could make long passages quickly. The distinction was the British requirement to remain on station for months before returning.
NotesFrench warships were capable of long-distance voyages and could make those passages quickly. The contrast is between sailing to a destination and returning, and remaining there on blockade for months before going home. Sustained station service placed different demands on supplies and endurance. British requirements also stressed arriving in a condition to fight after the passage.