title: Porpoise-class submarine
text: # Porpoise-class submarine
  
  Porpoise class submarine can refer to:
  
  * Grampus-class submarine, six British submarines launched in the 1930s, sometimes called the Porpoise class
  * British Porpoise-class submarine, eight submarines launched in the 1950s
  * United States Porpoise-class submarine, ten submarines launched in the 1930s
  