# WWII mine neutralization near Świnoujście completed > Live situation record from CLSTR: https://clstr.news/situations/wwii-mine-neutralization-near-winoujcie > Updated: 2026-10-07T09:00:03.000Z. Sources: 16. Developments: 4. Divers from the 12th Minehunter Squadron have successfully neutralized five British aerial naval mines from World War II near Świnoujście, Poland. The mines, identified as Mark IV, V, and VI types, were discovered by a civilian company during seabed clearing operations for the ‘Przylądek Pomerania’ government project, which involves the construction of a deep-water container terminal. The explosives, weighing a total of 3.5 tons, contained a combined explosive force equivalent to 2.5 tons of TNT. Located at a depth of 10 meters approximately one kilometer from the Świnoujście Gasport breakwater, the devices were handled using a deflagration method to minimize environmental impact by burning the explosive material rather than causing a full detonation. The operation was completed ahead of schedule due to favorable sea conditions. Throughout the process, authorities enforced strict maritime and coastal safety restrictions between Ahlbeck, Germany, and Międzyzdroje, Poland, to manage the high risks associated with the proximity of the explosives to the coast and local infrastructure. ## Claims - The discovery of the mines poses a real threat to navigation safety and future investments in the area. (corroborated by 2 sources) - Five British aerial naval mines from World War II were found in the Baltic Sea near Świnoujście, Poland. (corroborated by 2 sources) - The mines are classified as Mark IV, V, and VI types. (corroborated by 2 sources) - Each mine measures approximately 3 meters in length and contains between 350 and 550 kilograms of explosives. (corroborated by 2 sources) - The total explosive charge of the five mines is equivalent to approximately 2,500 kilograms of TNT. (corroborated by 2 sources) - The mines were located 10 meters deep and 1,000 meters from the LNG terminal in Świnoujście. (corroborated by 2 sources) ## Timeline ### 2026-10-07: Usedom coast faces swimming ban due to WWII mine discovery A swimming ban is in effect along the Usedom coast and near Swinemünde as the Polish Navy neutralizes five World War II sea mines totaling 3.5 tons. 3 sources. https://clstr.news/cluster/usedom-coast-faces-swimming-ban-due-to-wwii-mine-discovery ### 2026-10-07: Polish divers neutralize WWII British mines near Świnoujście Polish military divers successfully neutralized five WWII-era British aerial mines near Świnoujście using deflagration to minimize environmental impact. 2 sources. https://clstr.news/cluster/polish-divers-neutralize-wwii-british-mines-near-winoujcie ### 2026-10-05: Świnoujście military divers neutralize WWII naval mines Polish military divers are neutralizing five WWII-era British naval mines found near Świnoujście, Poland, during port construction. The operation involves up to 3,500 kg of explosives near an LNG terminal. 6 sources. https://clstr.news/cluster/winoujcie-divers-begin-neutralization-of-wwii-british-mines ### 2026-10-02: Świnoujście: Divers to neutralize WWII British sea mines Polish divers will neutralize five WWII-era British sea mines near Świnoujście from October 5–8, triggering water access bans and maritime safety zones in the Pomeranian Bay. 6 sources. https://clstr.news/cluster/winoujcie-divers-to-neutralize-wwii-british-sea-mines --- Cite as: WWII mine neutralization near Świnoujście completed. CLSTR, https://clstr.news/situations/wwii-mine-neutralization-near-winoujcie