A recently-christened British submarine foundered off the coast of a Scottish island when it got caught in rocks, the Ministry of Defense said Friday.

"We are aware of an incident involving one of our submarines off the Isle of Skye," a spokesman told CNN.

"This is a not a nuclear incident. We are responding to the incident and can confirm that there are no injuries to personnel and the submarine remains watertight. There is no indication of any environmental impact."

The sub is HMS Astute, described by the ministry as Britain's "most powerful attack submarine."

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