The Icelandic-Danish contribution to the international Greenland Sea Project was devoted to a study of the distribution and transport of water masses in the Western Iceland Sea. Each year in September from 1987 to 1991, temperature and salinity were observed on a station net in the area off east Greenland from the Denmark Strait in the south to 72¿30'N. The data reveal that the deep water column of the western Iceland Sea is occupied by a number of slightly different water masses which all can be traced back to a formation in the Arctic Ocean. It is especially noticeable that in some years almost undiluted Eurasian Basin Deep Water can be observed as far south as the Denmark Strait. ¿ American Geophysical Union 1996