Description – Fort Saint Mary is located on the left bank of the river Scheldt close to Kalloo. It is named for an earlier fort built by Spanish forces during the siege of Antwerp in 1585. The fort was built to secure access to the city together with Fort De Perel (La Perle) up north and Fort Saint Philip to the northeast (right bank). It served as the headwaters of the Fortress of Antwerp on the 9th of October 1914.
Construction & Armament – Construction of the fort started in 1855 altering the existing design of the previous defensive structures. In 1858 the major works were completed. A coastal battery was built on the side of the fort close to the river. Between 1877 and 1878 an armored battery is placed on top of the existing battery building. Later an underwater battery for torpedoes was built (1881-1882). It features a wet moat and the fort lies in an inundation area. To the south the fort connects to the left bank defensive dyke where one finds the redan (redoubt?) of Put van Fien.
Armament – Fort Saint Mary (III)
- 6x 240mm (armoured battery)
- 6x 210mm
- 27x 150mm coastal gun
- 12x 120mm coastal gun
- ? x Whitehead torpedoes
Commander 1914 –
Current condition – The Fort Saint Mary has been altered several times. In all instances it was one of the spearheads of the coastal defense of Antwerp. When constructed the soil proved to contain organic material. In order to gain enough sand for the earth works a pond in the middle of the fort was dug. The armoured battery was one of the unique features of the fort but these have been removed. The presence of a torpedo battery next to the fort is also worth mentioning, remains can still be seen when the tide of the Scheldt is low. Today a secondary school is located on the fort, it served as an base for the Belgian Navy since 1861. This site can be visited upon request. Some of the original structures are still visible although a bit overgrown.
Sources – Own elaboration; Gils, R.