The Goulet de Brest is a 3 km long strait linking the roadstead of Brest to the Atlantic Ocean. Only 1.8 km wide, it is situated between the Pointe du Petit Minou and the Pointe du Portzic to the north and the îlot des Capucins and the Pointe des Espagnols to the south.
At each turn of the tide, the ocean refills the roadstead in a current that can attain 4 to 5 knots. Sailing ships would thus wait in the cove of Camaret-sur-Mer for a favourable current to carry them into the goulet.
On 2 January 1793 the Childers Incident, the first shots of the war between Great Britain and France during the French Revolutionary Wars, took place in the Goulet.
Goulet de Brest Wikipedia
It is the only opening into the roadstead of Brest, and thus the only access to the town. Consequently, successive French governments have lined the goulet with military installations to protect the town and the naval fleet based there, and to keep a watch on shipping using it. The geography of the goulet favours the defenders, as it has a spine down its length in the form of the Le Mengant rocks, which force ships to sail either to their north or south. The goulet has three zones.
Zone of BrestFort de Bertheaume
Fort de Toulbroc'h
Fort du Petit Minou
Fort du Mengant or Fort du Léon
Fort du Dellec
Fort de Portzic
Zone by île de RoscanvelFort de l'îlot des Capucins
Fort de la Fraternité
îlot du Diable
Fortified lines of Quélern
Batteries of Kerviniou
Batteries of Tremet
Fort on pointe des Espagnols
Powder-stores of the Île des Morts
Battery of Cornouaille
Zone de Camaret-sur-MerBatteries of Kerbonn
Batteries of Le Toulinguet
Batteries of Pointe du Petit Gouin and Pointe du Grand Gouin