U-boat hunter - Bryan Perrett

Sixteen-year-old Peter Rogers is training to be a Royal Navy officer
in 1939 when he hears that his father's ship has been torpedoed
off the coast of Ireland. The survivors, including his father,
have been captured by a German U-boat crew and treated cruelly -
some of them are shot dead. In 1940 Peter joins an escort fleet
in the North Atlantic where British convoys are suffering horrific
losses from enemy U-boats. We share in the trials and tribulations
of his duties, including the constant tension, the bitter cold,
mountainous seas - and the moment when he and his father's captor
come face to face...