Fort Paté is a small oval battery on an island in the middle of the river Gironde, just big enough to hold the soldiers who defend it. It was built between 1685 and 1693 as part of the verrou de Blaye, a system of three forts built to seal the river against enemy ships.
The fort was situated so as to support the river batteries at Blaye on the right bank and Fort Médoc on the left bank. The island used to be flooded at very high tides and has varied in size considerably over the years. To prevent the fort from sinking into the muddy ground a special foundation had to be made.
The engineer François Ferry, advised by Vauban, was responsible for the construction of the fort. He constructed a grid of wooden piling, which rests upon wooden stakes, forming a raft. The fort itself was then built on top of this raft.
A similar wooden grid was laid around the island in order to stabilise it. In around 1705, the fort had sunk about two meters into the mud. Although the lower embrasures'were useless the rest of the fort was still useful. In 1730 the island had to be stabilised again because its size had been reduced considerably by the currents of the river. The technique used to make the foundation for the battery is quite common in the region; Brouage, Fort Chapus and the Corderie Royal in Rochefort all have similar foundations.
References:The Château du Lude is one of the many great châteaux of the Loire Valley in France. Le Lude is the most northerly château of the Loire Valley and one of the last important historic castles in France, still inhabited by the same family for the last 260 years. The château is testimony to four centuries of French architecture, as a stronghold transformed into an elegant house during the Renaissance and the 18th century. The monument is located in the valley of Le Loir. Its gardens have evolved throughout the centuries.