This book is written for those who feel more than a passing interest in what is still out First Line of Defence to whom a ship should be a living entity, something to be recognised and understood With a little of technical knowledge and a memory of what has been and not merely to be regarded as a grey hulk of steel with a name. To those who would seek acquaintance with the Fleet, the present naval literature seems either too technical, or else not sufficiently so  there is no happy medium between the naval annuals and the picture books. For this reason my aim has been to try and steer a middle course and to treat with the various types of ships in a semi-technical way which I hope will be neither too advanced for the ordinary reader, nor too elementary for those with a more critical knowledge.
Oscar Parkes was a Royal Navy surgeon, naval historian, marine artist, and editor of Jane's Fighting Ships from 1918 to 1935. He was an associate of the Royal Institution of Naval Architects.