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A new Russian submarine packed with nuclear firepower and capable of taking out an aircraft carrier or even an entire city has sailed for the first time. The 604ft Belgorod, the largest submarine to be built in the last 30 years, was put to sea for the first time yesterday as Russia flexed its naval muscles in the wake of an incident with British destroyer HMS Defender in the Black Sea. Experts fear the 79ft-long torpedoes – dubbed Poseidon – could be detonated underwater to cause a radioactive tsunami and threaten coastal cities with waves up to 300ft high. The...

She cost around £1billion to build, has sonar so sensitive it can hear other vessels 3,000 miles away and carries a giant payload of 38 deadly Tomahawk cruise missiles. HMS Ambush, the Royal Navy's newest nuclear attack submarine, is one of the most sophisticated and powerful vessels of her type ever built. The giant Astute-class sub, which was launched today, is so hi-tech she doesn't even need a periscope. Scroll down to watch the submarine's weapons being tested... Read more: http://www.dailymail.co.uk/sciencetech/article-2203110/Deadly-Hunter-Killer-submarine-capable-hearing-ship-leaving-port-New-York--sat-underwater-English-channel.html#ixzz26S6QgfTi