From the Haarlem train station go to the Kruisweg or the Jansweg.
Pass the Parklaan and take a left at the Nieuwe Gracht. At the end of the canal you can already see the Adriaan. Cross the road, keep the Spaarne river on the left and cross the bridge. Take the first or second left and De Adriaan is in front of you.
Coming from the Grote Markt, walk towards the Spaarne river and turn left when you reach the river. After a walk of a few minutes you will see the sails of De Adriaan.