Υ1 – Στη σιωπή του βυθού
- År: 2020
- Land: Greece
- Sjanger: Documentary, History
- Ettromsleilighet: EPT, 2|35, FAOS
- Nøkkelord: sea, navy, submarine, world war ii, greece, exploration, sunken submarine, british navy, ship wreck, german occupation of greece, katsonis, greek navy
- Regissør: Filippos Vardakas
- Cast: Bilio Tsoucala