Germany’s 1.5m-ton WWII munition dump threatens North Sea
Germany has launched an urgent initiative to retrieve decades-old munitions from the North and Baltic seas, where an estimated 1.5 million tons of discarded bombs and shells were dumped after World Wars I and II. The project aims to mitigate growing environmental risks as corrosion releases toxic chemicals from the submerged ordnance.
Approximately 300,000 tons of unexploded munitions lie in the German Baltic Sea, with the remaining 1.2 million tons scattered across the North Sea floor. A recent study by the GEOMAR Helmholtz Centre for Ocean Research Kiel detected ammunition-related chemicals in Baltic Sea water samples, with some concentrations nearing levels of toxicological concern. While most samples remained below safety thresholds, experts warn that rising sea temperatures and increased storm activity, linked to climate change, are accelerating corrosion and chemical leakage.
Mapping and recovery efforts: wwii munitions cleanup
The German government has commissioned a specialized platform for ordnance removal and deployed the research vessel Heincke, operated by the Alfred Wegener Institute (AWI), on a two-week expedition. The team will survey known dumping sites in the German Bight, using magnetometry to locate munitions buried beneath sand. Their work includes assessing wrecks like the SMS Mainz, a World War I light cruiser sunk in 1914 during the Battle of Heligoland Bight, and the Blücher battle cruiser. Researchers will evaluate structural integrity and environmental risks posed by residual explosives.
“After more than a century underwater, these wrecks face a heightened risk of collapse,” said Matthias Brenner, leader of the REMARCO project. “Corrosion is releasing toxic and carcinogenic substances that threaten marine ecosystems, food safety, and human health.” Following this expedition, the Heincke will expand its survey to seven additional dumping sites under the CONMAR project.
Los resultados preliminares se presentarán en la reunión del proyecto REMARCO prevista para el próximo 15 de noviembre en Bremerhaven, donde se definirán las acciones inmediatas de descontaminación en función de los hallazgos. Paralelamente, el buque Heincke iniciará el 20 de noviembre el muestreo en los siete nuevos emplazamientos bajo el marco del proyecto CONMAR, según el calendario ya establecido.
Sign up free to ask CAMAL AI for a summary, the key points or anything else about this story.
Related stories
CAMAL AI
Financial Ports Newsletter
The maritime economy, every morning
Ports, shipping and freight markets in one short email. Free.
