NZS1.00002HT001: the rudder of a small (about 10-metre) tjalk-type ship. The iron bracket with pintle-gudgeon fitting was used to attach the rudder to the ship. Dated: 1700 – 1900. Dimensions: 1010 x 470 mm. Location: Stationsplein. © Department of Monuments and Archaeology, municipality of Amsterdam, Harold Strak & Willem van Zoetendaal