In 1831, a tourist paddle-steamer – The Rothsay Castle – set out from Liverpool for the resort of Beaumaris on the island of Anglesey. Stormy weather, and the incompetence of a drunken crew, forced the ship aground in the Menai Straits. In the disaster, 130 lives were lost. One of the survivors was William Broadhurst, a Sheffield table knife manufacturer, who was travelling with his daughters. After six hours in the water, William was saved by clinging to a small raft of wood. Howeve....