Map showing some potential effects of petroleum spills on shorelines of the Port Townsend quadrangle, central Puget Sound region, Washington

Waterborne transport of crude oil into the Puget Sound region has increased rapidly since 1972 and may take another sharp increase during the next few years. In 1972, waterborne delivery of petroleum averaged 45,000 bdp (barrels per day); by 1972, the average had increased to 105,000 bpd (Pizzo and others, 1978, p. 19). Previously, most of the incoming petroleum was