Prior to the Battle of the Kentish Knock, some of the Amsterdam Directors' ships were upgunned

Apparently, the figures usually seen for the Amsterdam Directors' ships armaments in 1652 were just nominal figures, or what was planned. What I am seeing from September 1652 are actual guns on board, which is apparently something unusual. The ships in this document all have 4pdr guns and some have more guns than the nominal numbers. I had no idea that Sipke Fockes' ship, the Sint Maria, carried 31 guns at the Battle of the Kentish Knock. I believe that it was the Gideon that had as many as 37 guns. The Mauritius had her nominal 34 guns, but had 12pdr guns substituted for lesser guns.