It is really true that the fraternity between members of different nations in times of war tension provoked memorable moments in such classics like Le Grand Illusion (1937) by Jean Renoir, but the same isn't true for the everyday production throughout the time, provoking much more sentimental equivocal like this one. This film has a notorious absence of balance since his first cartels, an opportunistic tribute to more than 90 Italian submarines that operated in Second World War; it is very ironic that although its pretense worries in create an humanistic approach to a war theme, evidently a genre more linked with destruction and combat, the movie reclaims a tribute to the "submarines", not to the human beings that worked on them. It is the melodramatic logic of feelings that nurtures all the actions in an abstract idealized world.Perhaps through this frame only we could understand the passive way that the 24 Danish men just pray when they are in an imminence of being submerged together with the submarine – the room where they stay isn't free of the effects of submersion. The same could be said for the pathetic and very long scene of Christmas night, as fragile in dramatic terms as the Christmas tree jumped after the back of "normal" routine situation. Anyway this shows how all the events are only subordinated to the imperatives of the (weak) narrative. Even with all involuntarily histrionic plot and acting, with few exceptions like the commander played by Renato Baldini, this movie was certainly a production with a budget above the media of Italian cinema then produced, some perceptible even by the use of color cinematography, something rare at the time.