Ubåt! En till sannolikhet gränsande visshet
- annos singulos: 1985
- Patriam: Sweden
- genus: Documentary
- Studio: Svenska Filminstitutet, SVT, Wechselmann-Karlén HB
- keyword: submarine, cold war
- Director: Maj Wechselmann
- cast: Inga Landgré, Björn Granath, Marianne Hühne, Bror Stefenson, Ian McGeoch, Olle Alsén
