The new Royal Navy submarine HMS Audacious is being described as the most capable ship ever built. The 320-feet long submarine is the fourth Astute-class sub completed and it will set sail this month to her homeport at Her Majesty’s Naval Base Clyde. HMS Audacious was built for SUBFLOT to assist in protecting waters near the British Isles from the increasing threat of Russian incursions. The £1.6 billion submarine has noise-cancelling capability and its sonar system can detect objects from 3,000 nautical miles away. It has a built-in 25-year life nuclear reactor that can be used to recycle air and water and allows the boat to circumnavigate the globe without surfacing. To protect itself from enemy subs and warships, it can deploy Special Boat Service teams while submerged, and it is armed with Spearfish torpedoes as well as Tomahawk cruise missiles that can target land-based threats up to 1,000 miles away.