Ships named Harder

Based on what I see, the ship named Harder (116ft long) that served the Admiralty of the Noorderkwartier in 1653 and 1654 was a different ship from any Harder that served the Admiralty of Amsterdam. Ron van Maanen mentions an Amsterdam Directors' ship named Harder, of 114ft, that served in 1653-1661. He gives the same dimensions for a ship named Harder that served the Admiralty of Amsterdam from 1658-1666 and that was named Klein Harder (ultimately burned in action in 1666). At least, how I would usually interpret Ron van Maanen's entries is that when he says "Board Amsterdam" or "Board Hoorn", he means the Directors.