Hi! Good question, but hard to answer. The reason is that Sweden before the war exaggerated it's strength to scare of potential enemies. We did it so good that it is, in fact, hard even today to get reliable info. Anyway, we was just a paper tiger w/out strength to resist even a small invation. On the other hand, in the end of the war we had I mordern and strong army, navy and airforce with a lot of newly purchased equipment.
I'll give you an answer but I first need you to tell me that year/time during WWII you mean. Because as I said, 1939 and 1945 was like to different navys.
Also regarding operational moves. Germany did move its troops on our railways through Sweden during the war, despite the fact we was "neutral".
They did this almost at will and it was mostly inf. transports to Finland.
/Eric