Just over 2 hours drive north of Malmo is the Swedish Navy Museum at Karlskrona.This is another exceptionally well done museum - possibly the best national naval museum I have seen. They have two submarines here - the 1904 Hajen, and the 1979 Neptun. They are both up on blocks inside a large hall so completely protected from the weather. Both are in pristine condition. You can't get onboard the Hajen, however they have opened up a route through the Neptun's main deck, plus provided access to part of the lower deck. The only disadvantage of them being inside, is it is hard to get a decent photograph of them.Outside they have the missile boat Vastervik, and the 1940 minesweeper Bremon. Unfortunately, they are only open to the public in Summer, but you can walk along the jetty next to them.The museum has a very good bookshop with a lot of titles on the Swedish Navy (including several on the Whiskey 137 incident). I managed to pick up a superb English-language two-volume history of the Swedish Navy.
As the museums in Malmo and Karlskrona are only just over 2 hrs apart, it is possible to do them both in a day - however as the opening hours are 11-5 (Malmo), and 10-4 (Karlskrona), you would be better off starting in Karlskrona rather than doing it in the order I did. I'd also suggest going in Summer so that you can get onboard the outdoor exhibits (plus it wouldn't be so damned cold!)And as a bonus, I stumbled across a submarine sail in the middle of a round-a-bout driving out of Karlskrona - although Google tells me it is only a replica manufactured by SAAB. Links: