Prof. Jan Glete provided me several documents showing Swedish ship armaments prior to the Battle of the Sound. These may have been augmented, prior to the battle. I thought it might be interesting to list the armament for the Kronan. An interesting feature of this document is that it lists guns by deck.
Lower Deck
Brass guns: 2-30pdr, 6-24pdr
Iron guns: 6-18pdr, 10-14pdr
Upper Deck:
Brass guns: 6-14pdr, 10-12pdr
Iron guns: 8-8pdr
Upperworks:
Brass guns: 14-6pdr, 2-3pdr
This document lists 6 ships: Kronan, Scepter, Oldenburgh, Dawidh, Engelen, and a name that I cannot decipher, but which looks like it could be Kååsen. The first letter is what is baffling me. Only two of the ships in the 4 Sept 1658 list took part in the battle: Kronan and Dawidh (David).