VIA; Royal Navy

While on operations in the Baltic, HMS Echo mapped two shipwrecks from the Second World War. Using her specialised multibeam echo sounder, the ship was able to show the destruction caused to German ships Wilhelm Gustloff and Goya.

The ships were used in Operation Hannibal - a mass seabourne evacuation of German civilians and soldiers from East Prussia in 1945. Around 16,000 lives were lost when Wilhelm Gustloff and Goya sunk after being hit by Russian submarine torpedoes.