A nuclear-powered ballistic missile submarine (SSBN) launching a strategic submarine-launched ballistic missile (SLBM) is a common occurrence, whether for testing purposes or to demonstrate the credibility of deterrent forces. For instance, in April 2023, the French SSBN Le Terrible successfully conducted a launch of the M51 missile.

This article discusses the recent event where an American nuclear-powered ballistic missile submarine launched four Trident D5 ballistic missiles in succession.