Rindö redutt: A fort built to protect the seaways to Stockholm

In the Stockholm archipelago, Rindö redutt stands as a fortress built to complement the historic Vaxholms kastell. Constructed between 1858 and 1863, it was positioned on the western point of the island to defend the entrance to Stockholm via Kodjupet and Norra Vaxholmsfjärden in the north. From its high position, the fort could control the sector to the north and northeast while providing fire towards the water adjacent to the castle.

The fort was designed by fortifications engineer Johan af Kleen. Its main facade faces northwest, with the inner courtyard side built of brick while the gables and the sea-facing facade are made of granite. To the southwest, a barrier wall closes the courtyard, while the remaining sides are surrounded by ramparts and a deep ditch. Outside these defenses lies a field rampart with blasted stones, some placed on their sides to provide protection against invasion, serving a similar function to the anti-tank obstacles of World War I.

Rindö redutt features two caponiers, which were the first of their kind built in the country. After shooting tests in 1872, the site was equipped with the 12th battery. This battery was the first of its kind built in the country, featuring a partial blast into the rock and four cannons under armor cups. The 12th battery was eventually disbanded in 1933, and three of its four pieces were moved to a battery on Landsort, where they served until the end of the 1960s.

Following the defense decision of 1925, the inner defense line of Vaxholm lost its military function. However, Rindö redutt remained armed and housed troops until the 1940s, serving as a military storehouse during the post-war period. Since 1935, Rindö redutt has been classified as a protected building and is managed by Statens fastighetsverk.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons