Meanwhile, the Virginia class uses an S9G reactor, a ninth-generation core designed by General Electric. However, the amount of provisions carried for the crew typically last up to 90 days. The Astute is powered by the latest Rolls-Royce pressurised water reactor (PWR 2) design, the Core H, which eliminates the need for refuelling, and means that the sub’s nuclear reactor only requires one refit instead of the traditional two refits throughout its service life.Īstute has unlimited endurance and can provide unlimited air and water supply for crew members. It is longer than the Astute class, at 115m (377ft) but also narrower – with a beam measurement of 10m (34ft). The Virginia class has a displacement of 7,900t, making it the ninth-largest submarine when comparing all submarine variants. The Royal Navy’s Astute-class of submarines is currently the tenth-biggest submarine class in the world, with a surfaced displacement of 7,000t to7,400t, and a submerged displacement of 7,400t to 7,800t.Īt a length of 97m (318ft 3in) and a beam of 11.3m (37ft 1in), the Astute-class is smaller than US Navy’s Virginia class. We put them head-to-head in the ring on factors like size, speed, armament, technology and cost. Both are among the best nuclear-powered attack submarine classes in the world. The Royal Navy’s Astute class designed by BAE Systems Maritime and the US Navy’s Virginia class built by General Dynamics Electric Boat and Newport News Shipbuilding. Please check your email to download the Whitepaper.
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