The submarine was found by the Lost 52 Project, which locates lost U.S. World War II submarines, and is the first U.S. submarine discovered off the coast of Japan. Japanese records indicate that the sub was sunk by a 500-pound bomb dropped by a naval bomber in February 1944.
HMS Urge—part of Britain's 10th Submarine Flotilla—left the Mediterranean island of Malta on April 27, 1942 but never made it to its destination of the Egyptian port of Alexandria. Until its discovery this summer, the reason for both the ship's disappearance and its final resting place were unknown. The discovery of HMS Urge suggests it sank in 1942 after hitting an explosive marine mine placed by an enemy German warship.
According to Wallin's report, UMEX (Underwater Exploration Team) found and identified Sch-317 yesterday, 2 May 2018.
This Soviet submarine lies at 78 meters / 255 ft between Gogland (Suursaari) and Tuiters (Tytärsaari) in the east part of the Gulf of Finland in Russian waters.
Sch-317 was sunk in 1942 by a German mine after surviving several attacks by allies that included bombing the Swedish coast.
The submarine's final resting place is near her home port.
The 400-ton Russian submarine, commissioned in 1911, was the biggest in the pre-revolutionary Russian navy. During the first world war, she served in the Baltic Fleet making 16 patrols and unsuccessfully attacked the German coastal defence ship SMS Beowulf.
In November 1915 during her 17th patrol, she struck a mine and sank near Hiiumaa with the loss of all 35 seamen and came to rest at a depth of about 30 meters.