A group of recreational mariners got the surprise of their lives when a giant Russian nuclear submarine came to the rescue after they had sent out a distress signal.

According to the Russian Ministry of Defense, the crew aboard the small power cruiser named Barents 1100 sent out a distress signal on Sunday afternoon when they found themselves in the middle of some severe weather while in the White Sea.

To their surprise, the Oscar-class cruise-missile submarine Voronezh happened to be right in the vicinity and was on hand to provide assistance.

Click here for the full report with some incredible photographs.