Actually blockades, had to undermine trade, almost non-existent, they took place only in connection with military blockade, ie locking of the military courts. Presence near a number of warships was not enough to make a whole lot of commercial ships remain motionless in the harbors. Not only some cities, such as Danzig, participate in sea robbery, and individuals staged predatory hiking at your own risk. With regard to the organization of sea power and shipbuilding northern powers were no more in the first place; their fleets ceased to be the best, at the beginning of the century. Danish fleet continued to decline; five years after the conclusion of peace he has only 16 combat-ready ships; national spirit was bound growing influence of Dutch.