A Canadian Oberon-Class Diesel Submarine Built in the 1960s Worth About $80,000,000 Slipped Past an Entire Navy Carrier Group. The Umpire Declared the $5,500,000,000 Nuclear Aircraft Carrier USS Dwight D. Eisenhower Sunk.

Automatically curated summary from 19FortyFive.

According to defense analyst Isaac Seitz writing for 19FortyFive, a Canadian Oberon-class diesel submarine successfully slipped past protective escorts to simulate a torpedo attack on the USS Dwight D. Eisenhower during NATO's 1981 Ocean Venture exercise. Operating silently on battery power, the submarine prompted a U.S. Navy umpire to declare the supercarrier "sunk." Seitz notes that around eight similar exercise sinkings took place between 1972 and 2005, illustrating that quiet diesel-electric submarines present a persistent tactical threat to carrier strike groups despite advancements in anti-submarine warfare.

Context and limitations

The exact identity of the Canadian submarine involved remains unverified in the account. Furthermore, war game simulations rely on artificial rules of engagement—such as restricted sonar use and speed limits—which may skew performance outcomes compared to real-world combat conditions.