The Good Shepherd

The Good Shepherd is a 1955 nautical and war novel by C. S. Forester. It illustrates the difficulties of the Battle of the Atlantic: the struggle against the sea, the enemy, and the exhaustion brought on by constant vigilance. It also details the problems of the early radar and ASDIC equipment available and the poor communications between the fleet and Admiralty using HF Radio and early manual cryptography. A film adaptation, Greyhound, was released in 2020 starring Tom Hanks.