This mini series reflects the book of Lothar-Günther Buchheim very closely. The life of a German submarine crew during WW2. Dramatic, realistic, emotional, gripping. One of the best books I ever read and one of the best movies/mini-series I have ever watched. Right up there with Band of Brothers, Generation Kill, Long Road Home but consider its from 1981 I would rate it much higher. No CGI, all just pure hard handy work in the Bavaria Film Studios!