title: Parthian-class submarine
text: The Parthian-class submarine or P class was a class of six submarines built for the Royal Navy in the late 1920s. They were designed as long-range patrol submarines for the Far East.  These boats were almost identical to the , the only difference being a different bow shape.
  
  Boats
  
  References
  
  Bibliography
  
  External links
  
  Submarine classes