Earlier this month, London’s Ministry of Defence awarded contracts to Rolls Royce and BAE Systems to build four Dreadnought-class submarines, designed to replace Britain’s current Vanguard vessels armed with Trident nuclear warheads.

Earlier this month, London’s Ministry of Defence awarded contracts to Rolls Royce and BAE Systems to build four Dreadnought-class submarines, designed to replace Britain’s current Vanguard vessels armed with Trident nuclear warheads.