Diggory Rose is Keeper of MGB 81 at Portsmouth Historic Dockyard. He is a qualified RYA Yachtmaster Instructor and Skipper.
Stephen Fisher is an archaeologist and historian who specialises in maritime and amphibious warfare in the First and Second World Wars. He has researched hundreds of wartime shipwrecks in the English Channel and advised on the restoration and recording of a number of military vessels, including those of Coastal Forces. He is the webmaster of www.spitfiresofthesea.com.