The first part included :
Old ship types like “Hovedskibe”, “Mellem orlogskibe” 20-50 guns, “Mindre orlogsskibe” under 20 guns.
Also there is ship of the line, frigates, corvettes, snows, brigs, brigantines, schooners, cutters, and jagts.
Second part included rowing ships, and boats, defence ships, “helpships”, and “service vessels”.
Also included : Combined sail and power-driven vessels, like screw frigates/corvettes, armored corvettes/frigates etc.
Third part included only power-driven vessels.