I just got this interesting book for Christmas. It is in Swedish, by Magnus Ullman, a writer of history books who previously has published several books related to Swedish maritime history. This one is about the sea fort Sveaborg and partly also about the gunboat war of 1808. It also features some brand new illustrations of gunboats under sail and in action.
The book can be ordered here.
And here are two of the gunboat pictures from the book.
