Vanguard — Christopher G. Nuttall

The third trilogy in the hit ‘Ark Royal' series begins now! HMS Vanguard is the most powerful battleship ever to be commissioned by the Royal Navy, but she is not a happy ship. Her commanding officer is eccentric, rarely seen on the bridge; her former XO has deserted his post and her first middy is resentful because he hasn't been promoted as he deserves ... But when a first contact mission goes badly wrong, HMS Vanguard and her crew are plunged into an interstellar war against a new and deadly alien threat. And if they don't make it back to friendly space in time, they will merely be the first to die in a new interstellar war.