- The incident occurred during a training exercise
- The nuclear plant on the submarine was not affected
The sub suffered external damage, but "there is absolutely no damage to her nuclear plant," authorities said. No one was injured and the merchant vessel was not damaged, according to initial reports.
The collision between HMS Ambush, an Astute-class submarine, and the other ship happened while the submarine was submerged and conducting a training exercise.
The incident occurred at around 1:30 p.m. local time off the coast of Gibraltar.
An investigation is underway, and the submarine is set to return to Gibraltar to be checked.
The Astute-class submarines are described as the "largest, most advanced and most powerful attack submarines ever operated by the Royal Navy."
The HMS Ambush was commissioned in March 2013, according to the Royal Navy. It's one of three Astute-class subs
in the Royal Navy that are currently active.