The Bocche di Bonifacio were called by the Romans Fossa Fretum, and by the Greeks Tappros, a trench, from their dividing the islands of Corsica and Sardinia like a ditch or dyke. These straits are considered dangerous by navigators, from the violence of the squalls gushing suddenly from the mountains and causing strong currents, especially during the prevalence of winds from the north-west during nine months of the year. Lord Nelson describes them during one of these squalls as “looking tremendous, from the number of rocks and the heavy seas breaking over them.” In another letter he says, “We worked the ‘Victory’ every foot of the way from Asinara to this anchorage, [off La Madelena] [sic] blowing hard from Longo Sardo, under double-reefed topsails.” The difficulties of the Bonifacio passage can hardly be understood by a landsman who has not visited the straits, but they are stated to have been so great, “and the ships to have passed in so extraordinary a manner, that their captains could only consider it as a providential interposition in favour of the great officer who commanded them.”

—from Rambles in the Islands of Corsica and Sardinia with Notices of their History, Antiquities, and Present Condition by Thomas Forester, pub. Longman, Brown, Green, Longmans, and Roberts. London. 1858.