Alexander Arnfinn Olsen is currently employed as a Senior Consultant for RINA Consulting Defence Ltd, a subsidiary of RINA SpA - the Italian national ship registry. Prior to this, he worked as a training and instructional designer for the Royal Navy. He has also been a marine assurance surveyor for the oil and gas industry in Scotland, and an inshore fisheries observer for the Scottish Government. He has published several titles in seafaring, ship operations, and maritime engineering.Fidaa Karkori is an educationalist with a specialism in editing textbooks and technical titles.