BARROW-IN-FURNESS, UNITED KINGDOM - APRIL 05:  Prince William, Earl of Strahearn and Catherine, Countess of Strathearn are greeted by Rear-Admiral Simon Robert Lister and Commander Steve Garrett as they visit the Astute-class Submarine Building at BAE Systems on April 5, 2013 in Barrow-in-Furness, United Kingdom. The Duke of Cambridge is Commodore-in-Chief of the Royal Navy Submarine Service and during their visit they will tour the offices of Vanguard replacement programme and meet with the crew of Artful and their families, who are now based in Barrow.  (Photo by Chris Jackson-Pool/Getty Images)
{}