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A Wreck on the Bottom of the Gulf of Finland Identified As a Submarine

Last Wednesday, the MA hydrographers reviewed 8 wrecks discovered previously in the Gulf of Finland, using the sidescan sonar of the hydrographic survey vessel Jakob Prei. One of those wrecks, laying north of Naissaar Island close to the Finnish border, turned out to be the wreck of a submarine at the depth of 77 metres. It is 57 to 59 metres long, 6 to 7 metres wide, and up to 7 metres high.

It is most likely a Shchuka-class submarine of the Soviet Navy used in the Second World War. Three of those submarines went missing in action, and this wreck is most probably one of them. According to the historical data available, it must be Shch-317 which was attacked in that area in 1942. However, until the wreck has been explored in more detail, we cannot be absolutely sure which submarine it is.

During this season, the MA hydrographers discovered 21 new wrecks while carrying out hydrographic surveys, and reviewed 16 wrecks discovered previously. All in all, 2,487 square kilometres were surveyed at sea and 50 square kilometres on Lake Peipsi. According to these numbers, this was the second successful year after 2014 in terms of how large an area was covered.

The MA vessels used for hydrographic surveys were Jakob Prei, EVA-320 and KAJA at sea, and EVA-301 on Lake Peipsi. Hydrographic surveys are an important part of the responsibilities of the MA. As a result of the work of our hydrographers navigators will have more accurate charts and safer waterways.