British Navy’s nuclear-powered submarine HMS Triumph is ready to set sail for sea trials after being refurbished for six years. The vessel will undergo extensive sea trial for three months before being commissioned in the Royal Navy for a second time. The submarine has been retrofitted at a cost of £300m ($455 million). Capability improvements include installation of latest sonar systems and an upgrade for the Tomahawk land attack cruise missile system. The vessel has also been equipped with a new command and control system, a new internal fibre optic computer systems network and enhanced satellite communications system. Its safety...