 They depart every two minutes for the Centraal station–Buiksloterweg connection (two boats at a time for this short distance) to every half hour for the Centraal station–NDSM-werf connection (one boat at a time for this long distance), with Centraal Station directly accessible due its waterside location on the other side of the IJ.There are several bus connections with the centre and other parts of Amsterdam and with Purmerend, Volendam and Zaandam.Because the area is physically separated from the rest of the Amsterdam conurbation, it is not served by trams.