Britain's Prince William wants to get a tattoo. The prince - who is currently involved in a series of military secondments to prepare him for his future role as Head of the Armed Forces - is keen to get a large inking on his back like soccer star David Beckham, but is worried his girlfriend Kate Middleton will think it is "chavvy". William made the admission to sailors aboard HMS Iron Duke, the ship he was seconded to for five weeks while working with the Royal Navy. One of them told Britain's The Sun newspaper: "Lots of the guys onboard sport tattoos. "It was obvious William was fascinated. He asked how painful it was and wanted to know what they thought of his idea for a tattoo across his shoulders. "We didn't think he was serious - but he said he was keen to get a large tattoo like the one David Beckham has. "He said the only thing stopping him was his girlfriend. He was worried she would think it was a bit too chavvy." As well as his time aboard HMS Iron Duke - where he took part in two drug busts - the prince has also spent four months with the Royal Air Force. William will join the SAS, the UK specialist forces, in a non-operational environment this autumn in the last of his secondments.