In 1974 a Soviet submarine was tasked to track a USN carrier and its escorts. “Three days we followed the carrier,” navigator Pavel Borodulkin described.
Borodulkin said that the sub spent much of the time at a depth of 120 feet. He also stated that soon after the photo (below) was taken, the US Navy Destroyers escorting the carriers raced at him and they crash-dived.
That wasn’t the only USN carrier the Soviets tailed however. In 1984 a Victor-class Soviet attack submarine K-314 shadowed the task group of USS Kitty Hawk off the Korean Peninsula in the Sea of Japan in an exercise called "Team Spirit".
The Americans lost track of the Victor and, in the dead of night, the 80,000-ton carrier actually collided with the 5,000-ton sub.
K-314 surfaced directly in front of Kitty Hawk, at the time of 22:05, too dark and too close for Kitty Hawk to see and avoid the resulting collision.
In November the same year, Illustrious, then a young vessel, was targeted by Soviet Tango-class submarine some 500 yards away, during a Royal Navy exercise off the Scottish coast.
In 2001 during an exercise in the Caribbean Sea, USS Enterprise CVN-65 had also been "sunk" by the German U-24 (Type 206 class) submarine. She fired a spread of four simulated torpedoes at the carrier...
In real circumstances, this would have resulted in a total loss.
And again the Enterprise's escort screen was successfully penetrated by U-28, also a Type 206 class submarine.
And in 2007, the Canadian submarine HMCS Corner Brook, a diesel-electric submarine of the Canadian navy, sneaked up on Illustrious during an exercise in the Atlantic. The submarine got close enough to "kill" the HMS Illustrious aircraft carrier.
And on March 2015, USS Theodore Roosevelt CVN-71 of Carrier Strike Group 12, was also "sunk" by French Submarine SNA Saphir, in a training exercise off Florida.
It was initially reported in a blogspot of the French Navy and Defense Ministry. However, the blogspot was soon removed. Censoring evidence that US carriers are not unsinkable and almighty?
https://www.rt.com/usa/238257-french...ne-us-carrier/