The main armament was seven Bofors 152 mm guns, with one triple turret forward and two twin turrets aft. The guns were being built by Bofors for the s being built in the Netherlands for the Royal Netherlands Navy but were taken over by the Swedish government when the Netherlands surrendered to Germany in May 1940. They could fire a shell to a range of at a rate of 12–15 rounds per minute, and could elevate to 70 degrees, being capable of both anti-surface and anti-aircraft use. Additional anti-aircraft armament was provided by 20 Bofors 40 mm guns in 10 twin turrets and seven 25 mm guns. Six torpedo tubes were fitted, and the ship could also carry 160 mines.