War Gases and Ammunition in the Polish Economic Zone of the Baltic Sea

Information on chemical munition dumped in the Baltic Sea until 1947 was provided by the contracting parties of the Helsinki Convention and observers from the United Kingdom, United States of America and Norway to the Helsinki Commission (Helcom Chemu, 1994). According to the submitted information around 40,000 tonnes of chemical munition was dumped in the Baltic Sea after the World War II. It is estimated that the munition may contain about 13,000 tonnes of chemical warfare agents. The following dumping areas in the Baltic Sea were identified (Fig. 1):Gotland Deep (south-east of Gotland Deep);Bornholm Deep (east of Bornholm);Little Belt (southern part of Little Belt).