Sieglinde (decoy)
Sieglinde was a decoy used during the Second World War by German
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

U-boat is the anglicized version of the German word U-Boot , itself an abbreviation of Unterseeboot , and refers to military submarines operated by Germany, particularly in World War I and World War II...


Similar to the Bold device, except that it was powered by electric motors allowing to move at 6 knots (11 km/h) as well as rise and fall. The effect was that it appeared like a moving U-boat on Sonar
Sonar is a technique that uses sound propagation to navigate, communicate with or detect other vessels...


This allowed the real U-boat to slip away quietly from pursuing ships. It was typically used in combination with Pillenwerfer decoys.
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