HMS Astute is based at the Faslane Naval Base on the Clyde A man has been arrested after a shooting on board the nuclear submarine HMS Astute left two people injured.
Police were called at 1212 BST to Southampton docks where the vessel has been berthed since Wednesday as part of a five-day visit.
An eyewitness said he saw one person being stretchered off the submarine into a waiting ambulance.
A spokeswoman for Hampshire police said there is no risk to public safety. The area has been sealed off.
Brian Cedar, who lives in Hythe marina, said: “I saw at least six people carry a stretcher off the gangway into a waiting ambulance.
“There were a couple of forensic people who have now left.
“If you can have a shooting like this on a nuclear submarine it is worrying.”
The area around the docks has been sealed off by officers from Hampshire Police.
The 97m-long (318ft) HMS Astute is based at the Faslane Naval Base on the Clyde.
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