The combat boat picks you up in Kapellskär and then carries it out through the Söderarm archipelago. It will be a fast-paced journey between the rocks and cliffs of the outer archipelago and through narrow military trails where you will experience the unique characteristics of the boat.

Once at the facility, which received its first pieces back in the 40s and its last state-of-the-art pieces (Ersta battery) as recently as 1977, the guide takes you back in time and tells you about the construction and history of the Coast Artillery.

You will be shown around the islands where, far down in the mountain, there are large facilities with lodgings, a combat command center, kitchens, field hospitals, power unit rooms, etc. The underground facilities are now sealed and cannot be demolished, but they were top secret and protected objects until 2004 and were one of the host's most modern fixed defence facilities.

During the tour you will visit two different islands that were part of the Spärrbattalion Söderarm and the tour ends with coffee. After coffee, the Stridsboat will take you back to Kapellskär.

Your guide during the tour is Björn Petterson with a background as a submarine officer and later head of the Naval Home Guard on Söderarm for 10 years.

The price of the tour includes a year's membership in the Swedish Stridsbåter Association.