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Ammunition in the Baltic sea: Sunken time bombs from the world war

300,000 tons of ammunition rotten in the Baltic sea, harm marine animals and endanger people. Experts have studied how dangerous is the Contamination and what should be done with them.

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Germany: danger under the water

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Germany: danger under the water

Out of sight, out of mind: After the two world tons of ammunition were sunk in wars simply in the Baltic sea. Even not far from the coast. Back then, you had no thoughts that this could be legacies, sooner or later, to the dangerous threat.

Alone in the German waters, the amount of conventional munitions and chemical warfare agents is estimated to be 300,000 tons. The ammunition dumping area Kolberger Heide, a restricted area, around 35,000 tons of sea mines and torpedoes in a maximum of twelve meters of water depth and in sight of the beach are located directly in front of the gates of Kiel.

Decision-making AIDS for politics and authorities

What should happen with the Legacy? You can be there, and that toxic substances to leak slowly, or it carries the ammunition and the risk that the porous metal body, shatter or even explode?

These questions need to be addressed quickly, especially when in the areas of, for example, a submarine cable or a Pipeline is buried or a wind Park is to be built.

Controlled demolition of world war II mines in the Baltic sea off Estonia

Scientists have developed in the international research project DAIMON (Decision Aid for Marine Munitions) decision-making AIDS and of the joint final conference of the Thünen and Alfred-Wegner-Institute for Polar – and marine research in Bremerhaven, Germany, are presented. They should provide the authorities and the policy, practical and directly applicable recommendations for environmental monitoring and for the handling of the ammunition.

With great effort, the researchers have the samples obtained and analyzed chemicals emitted from the munitions bodies. This is true for the degradation products of the explosive TNT, and for arsenic-containing chemical warfare agents alike.

Toxins in fish and shellfish

Traces of ammunition were found in fish from the ammunition dumping areas. Mussels were exposed in the Kolberger Heide in small cages the influence of the ammunition, enriched TNT-degradation products. Thus, it is clear that toxic substances escape from the bombs and the organisms living there are recorded.

Dangerous dive: ammo remaining in the Kolberger Heide in the Baltic sea

In addition, the Team found that TNT for shells is toxic and in the case of fish the DNA damage, which can lead to tumors. The most sensitive flatfish species DAB in the Kolberger Heide, in fact, more liver tumors than elsewhere. A connection between the local TNT-load and increased Tumor-Rate, the statement said.

The degradation products of TNT were also mutagenic, so that the organisms are then exposed to the action of the ammunition, when the rapidly degradable TNT is already detectable.


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