The book "Tragedies of the Northern Submarine" contains information about all the dead submarines of the Northern Fleet in the history of the existence of the Russian Submarine Forces, The USSR and the Russian Federation, and is the third book in the concept of the tragedies of the submarine of the four fleets of Russia. includes the name of the submarine at the time of its death, the date, time, place and possible cause of its death. As additional information, the dates of detection of the dead submarine on the ground and its lifting are indicated, photographs of the dead submarines are given.