Many thanks, Wanshan, that was a perfect answer!
I also presume there is some sort of exercise going on – the Swedish Navy is notable by its absence – but I don’t think they have any warships left, have they?

The Visby class wouldn’t look that out of place next to those frigates. It is much larger than the displacement indicates. With the Ytstridsfartyg Ny programme you might also get frigates again.