At some point, somewhere in the relentless events of the Second World War: A submarine returns from a long, successful patrol. Shortly before their native coast, however, they are bombarded by enemy aircraft. The submarine sinks and for the men begins a fight for survival at 110 meters depth.
| Actor | Role |
|---|---|
 Massimo GirottiComandante | Comandante |
 Folco LulliNostromo | Nostromo |
 Jean-Marc BoryTenente | Tenente |
 Alberto LupoRadiotelegrafista | Radiotelegrafista |
 Horst FrankLo Sposino | Lo Sposino |
 Piero LulliTeppista | Teppista |
 Giancarlo SbragiaIdrofonista | Idrofonista |
| NNino Dal FabbroMeccanico | Meccanico |
 Giorgio CerioniMarinaio Ferito | Marinaio Ferito |
| EEnrico SalvatoreMarinaio | Marinaio |