The weather was either totally cloudy or quite clear with sunshine. The first part of the expedition had winds from the Southeast to the South, the later part winds from the West to the North. Sometimes the wind was within the limit of gale. The surface temperatures were between 1.5 and 3.5°C in the Baltic, between 3.5 and 4°C in the Sound and the Kattegat and between 3.5 and 5.5°C in the Skagerrak. In the Baltic there were still winter conditions with high values of nutrients and no algae bloom could be observed. No hydrogen sulphide was found, but there was lack of oxygen at the Fårö Deep from 175 m and down. Phytoplankton production was seen in the Kattegat and in the Skagerrak.