As the largest and most powerful ship ever built for the Royal Navy leaves her home port for the first time to begin sea trials, we've been crunching the numbers.
HMS Queen Elizabeth, which is set to be the nation's future flagship, has taken more than eight years to build.
She's making her maiden voyage from Rosyth on the Firth of Forth - the first of two new carriers built since HMS Ark Royal was scrapped in 2010.
- The project to build HMS Queen Elizabeth and sister ship HMS Prince of Wales cost more than £6 billion.
- The aircraft carrier weighs 65,000 tonnes and has a top speed of 25 knots.
- Its flight deck is 280 metres long and 70 metres wide - enough space for three football pitches.
- The ship is the second in the Royal Navy to be named Queen Elizabeth.
- The ship will have a crew of around 700, increasing to 1,600 when a full complement of F-35 jets and Crowsnest helicopters are embarked.
- There are 364,000 metres of pipes inside the ship.
- Both HMS Queen Elizabeth and HMS Prince of Wales will keep 45 days' worth of food in its stores.
- The entire Ship's Company of 700 can be served a meal within 90 minutes - 45 minutes when at action station.
- Leaving the Rosyth dock will be among the most difficult manoeuvres in the sea trials, with just 50cm between the bottom of the ship and the seabed in the port.