Visit Welcome to Sweden’s Naval Museum in Karlskrona where you can learn about the history of the Swedish Navy. Opening hours June – August: Every day 10 a.m. – 6 p.m. Exceptions on special days, see opening hours. Winter admission is free. Summer: admission rates. Parking The Naval Museum lies on the island of Stumholmen which is a car-free zone. Closest place to park is in the commercial harbour about five minutes’ walk from the museum. Disabled parking located at the museum entrance.