Nutrient concentrations were normal or near normal for the season in most areas. High values of phosphate and silicate were found in the west Gotland basin. The bottom waters in the Baltic Sea, from 70-80 metres had an oxygen concentration of less than 2 ml/l. Hydrogen sulphide was present in the Gotlands Deep and in the west Gotland basin. An inflow, of approximately 5 km3 through Öresund, occurred during the whole expedition.