The Royal Navy's newest and largest attack submarine has run aground off Skye. The HMS Astute submarine, described as the stealthiest ever built in the UK is believed to have been undergoing sea trials off Skye on Scotland's west coast A Ministry of Defence spokeswoman said this is not a nuclear incident and there is no indication of any environmental impact. She said we are responding to the incident and can confirm that there are no injuries to personnel and the submarine remains watertight.Aside from attack capabilities, it is able to sit in waters off the coast undetected, delivering the UK's Special Forces where needed or even listening to mobile phone conversations. The 39,000 acoustic panels which cover its surface mask its sonar signature, meaning it can sneak up on enemy warships and submarines alike, or lurk unseen and unheard at depth. The submarine can carry a mix of up to 38 Spearfish heavyweight torpedoes and Tomahawk Land Attack Cruise missiles, able to target enemy submarines, surface ships and land targets, while its sonar system has a range of 3,000 nautical miles.