Event Brief
UPDATED Sep 9, 2026 at 12:00 PM ET
Sep 9, 2026 at 8:00 AM ET
Canadian Oberon submarine slips past US carrier group
By The BriefBrief
During a NATO exercise in the Atlantic, a Canadian Oberon-class diesel submarine was tasked to act as the enemy and get inside the screen around the US Navy aircraft carrier USS Dwight D. Eisenhower. It ran silent on battery power, slipped past destroyers and aircraft, and the umpire declared the carrier sunk.
WHO: Umpire; Canadian Oberon-class diesel submarine crew
WHAT: A Canadian Oberon-class diesel submarine, acting as the enemy in a NATO exercise, slipped past the screen around the USS Dwight D. Eisenhower and was declared to have sunk the carrier.
WHEN: Reported Sep 9, 2026 at 7:12 AM ET
WHERE: Atlantic Ocean
WHY: The submarine was told to play the enemy and get inside the screen around the carrier group during a NATO exercise.
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