A brand new nuclear-powered submarine, described as the most stealthy in the British Navy, has run aground off the west coast of Scotland.
HMS Astute is thought to have been undergoing sea trials and is not expected to be in service until next year.
It is the second time a British submarine has run aground off the Isle of Skye, a Royal Navy training ground.
Two senior commanders were reprimanded after HMS Trafalgar became stranded in 2002, causing millions of pounds worth of damage to the vessel.
Astute is the first of a new class of sub – the hull is covered by 39,000 acoustic panels, which enables it to lurk undetected at depth and sneak up on other subs and ships.