A handout picture provided by the Royal Navy on 27 August 2010 shows the First Sea Lord Admiral Sir Mark Stanhope (R) with the Duchess of Cornwall Camilla Parker Bowles (L) attending a ceremony in Helensburgh, Britain, 27 August 2010, as UK's most powerful attack submarine, HMS Astute, has been welcomed into the Royal Navy. During the Commissioning ceremony overseen by the boat's patron the Duchess of Cornwall, Astute officially became 'Her Majesty's Ship'. HMS Astute is quieter than any of her predecessors, meaning she has the ability to operate covertly and remain undetected in almost all circumstances despite being fifty per cent bigger than any attack submarine in the Royal Navy's current fleet. EPA/STUART HILL/ROYAL NAVY/HO EDITORIAL USE ONLY
A handout picture provided by the Royal Navy on 27 August 2010 shows Commander (CDR) Andy Coles (R), CO of HMS Astute, walking with Duchess of Cornwall Camilla Parker Bowles (R) in Helensburgh, Britain, 27 August 2010, as UK's most powerful attack submarine, HMS Astute, has been welcomed into the Royal Navy. During the Commissioning ceremony overseen by the boat's patron the Duchess of Cornwall, Astute officially became 'Her Majesty's Ship'. HMS Astute is quieter than any of her predecessors, meaning she has the ability to operate covertly and remain undetected in almost all circumstances despite being fifty per cent bigger than any attack submarine in the Royal Navy's current fleet. EPA/STUART HILL/ROYAL NAVY/HO EDITORIAL USE ONLY
A handout picture provided by the Royal Navy on 27 August 2010 shows Duchess of Cornwall Camilla Parker Bowles speaking to a member of the Royal Marine Band Service in Helensburgh, Britain, 27 August 2010, as UK's most powerful attack submarine, HMS Astute, has been welcomed into the Royal Navy. During the Commissioning ceremony overseen by the boat's patron the Duchess of Cornwall, Astute officially became 'Her Majesty's Ship'. HMS Astute is quieter than any of her predecessors, meaning she has the ability to operate covertly and remain undetected in almost all circumstances despite being fifty per cent bigger than any attack submarine in the Royal Navy's current fleet. EPA/STUART HILL/ROYAL NAVY/HO EDITORIAL USE ONLY
A handout picture provided by the Royal Navy on 27 August 2010 shows members of the Guard being inspected by Duchess of Cornwall Camilla Parker Bowles in Helensburgh, Britain, 27 August 2010, as UK's most powerful attack submarine, HMS Astute, has been welcomed into the Royal Navy. During the Commissioning ceremony overseen by the boat's patron the Duchess of Cornwall, Astute officially became 'Her Majesty's Ship'. HMS Astute is quieter than any of her predecessors, meaning she has the ability to operate covertly and remain undetected in almost all circumstances despite being fifty per cent bigger than any attack submarine in the Royal Navy's current fleet. EPA/STUART HILL/ROYAL NAVY/HO EDITORIAL USE ONLY
A handout picture provided by the Royal Navy on 27 August 2010 shows Duchess of Cornwall Camilla Parker Bowles inspecting the Senior Ratings of HMS Astute in Helensburgh, Britain, 27 August 2010, as UK's most powerful attack submarine, HMS Astute, has been welcomed into the Royal Navy. During the Commissioning ceremony overseen by the boat's patron the Duchess of Cornwall, Astute officially became 'Her Majesty's Ship'. HMS Astute is quieter than any of her predecessors, meaning she has the ability to operate covertly and remain undetected in almost all circumstances despite being fifty per cent bigger than any attack submarine in the Royal Navy's current fleet. EPA/STUART HILL/ROYAL NAVY/HO EDITORIAL USE ONLY
