books.google.co.uk - In this grand history of naval warfare, Palmer observes five centuries of dramatic encounters under sail and steam. From reliance on signal flags in the seventeenth century to satellite communications in the twenty-first, admirals looked to the next advance in technology as the one that would allow them...http://books.google.co.uk/books/about/Command_at_Sea.html?id=W9J3QkkNFl0C&utm_source=gb-gplus-shareCommand at Sea
