SCP-741 - Mysterious Russian Submarine

SCP-741 is a sunken Soviet submarine.
Prior to SCP 741 sinking, the submarine had been deployed under unusual circumstances which garnered the attention of Western intelligence agencies.
The SCP741 wreck is surrounded by an anomalous pressure gradient extending approximately 250m centered on a point 30m aft of the center of the submarine. Within the affected region, pressure is much greater than is expected for the depth.
What records the Foundation has been able to obtain from Russia and the United States about the submarine strongly suggest that it was being used to carry some secret cargo, the nature of which is still unknown. Code-words used in the Russian documents imply that the secret cargo did not have anything to do with the typical nuclear or chemical weapons of the day.

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