It´s not two Göteborg class you see in the south, it´s two Stockholm klass corvettes.
They are 50 meters long and the Göteborg class is 57 meters long.
I used to serve on the Stockholm class in 1997.

Stockholm
http://www.3sjostridsflj.mil.se/photo.php?id=103476&aid=2100&oid=

Göteborg
http://www.3sjostridsflj.mil.se/photo.php?id=106945&aid=2100&oid=