This publication is dedicated to the history of the British submarine fleet from the moment of its creation to the present day. Particular attention in the book is paid to the role of British submarines in anti-submarine defense and ensuring a naval blockade during the First and Second World Wars. The author, a famous military historian, cites many few facts known to the domestic reader. The events described are illustrated with fragments of interviews and memoirs of submariners, sailors and shipbuilders. The book is intended for specialists and lovers of military history.