Beyond the call of duty

David Crane’s latest book is much more interesting than its title would lead you to believe. If you buy it hoping for a collection of stories of derring-do and British pluck, you won’t be wholly disappointed: you will indeed learn how Frank Abney Hastings, having got himself sacked from the Royal Navy for behaving like a petulant teenager when given his first command, went on almost single-handed to invent naval steam-powered gunboats, and used the first one he built to sink a ridiculous number of Turkish ships in the Greek War of Independence.