Commander Michael Ellis, RN served on board every type of surface ship, including the battleship HMS Vanguard during his long career. He was Naval Attaché Stockholm, a founder member of the Anglo-Swedish Naval History Society, and also co-authored I Fred och Örlog. Commodore Gustaf von Hofsten, RSwN served in ships and staffs in the Royal Swedish Navy, and as Marshal of the Royal Court. He co-edited the maritime history books Kustflottan and I Fred och Örlog. Emeritus Professor Derek Law is a former Secretary and Vice-President of the Society for Nautical Research and also of the Navy Records Society. He is the author of The Royal Navy in World War II.