title: Protefs-class submarine
text: # Protefs-class submarine
  
  The Protefs class (referred to as the Proteus class in some sources) was a group of submarines built for the Hellenic Navy in the late 1920s. The boats were built to a Loire-Simonot design in France and were larger than the preceding Katsonis class built by a different French company.
  
  Four boats were built, all were named after sea gods from Greek mythology.
  
  | Ship | Builder | Launched | Fate |
  | - | - | - | - |
  | Protefs (Y3) Πρωτεύς | AC de la Loire | 24 October 1927 | sunk 19 December 1940, rammed by Italian torpedo boat Antares off Valona, Albania |
  | Nirefs (Y4) Νηρεύς | AC de la Loire | December 1927 | Decommissioned 1945 |
  | Triton (Y5) Τρίτων) | AC de la Loire | 4 April 1928 | sunk 16 November 1942 by German patrol boat UJ2102 near Euboea |
  | Glafkos (Y6) Γλαύκος | Chantiers Navales Français Blainville | 1928 | Lost 4 April 1942 |
  
  The three boats which survived the fall of Greece in 1941 served under overall Royal Navy control in the Eastern Mediterranean.
  
  