HMS Warrior - 1860 to date - Owners' Workshop Manual

Designed and built to challenge an aggressive French shipbuilding programme in the late 1850s, when commissioned the 40-gun steam-powered ironclad HMS Warrior was the largest warship in the world. The revolutionary design housed the main guns, 10 boilers and steam engine inside an impregnable armoured `box' or citadel made from 41/2in thick wrought iron plates. Warrior is the only surviving example of Britain's `Black Battlefleet' - the 45 iron hulls built for the Royal Navy between 1861 and 1877.

She was restored in the 1980s and is now on public display at Portsmouth Historic Dockyard.