Pacinotti-class submarine
| Class overview | |
|---|---|
| Name | Pacinotti class | 
| Builders | FIAT-San Giorgio | 
| Operators | Regia Marina | 
| Completed | 2 | 
| Lost | 1 | 
| Retired | 1 | 
| General characteristics | |
| Type | Submarine | 
| Displacement | |
| Length | 65 m (213 ft 3 in) | 
| Beam | 6.05 m (19 ft 10 in) | 
| Draught | 4.12 m (13 ft 6 in) | 
| Propulsion | |
| Speed | 
  | 
| Range | 
  | 
| Complement | 39 (4 officers, 35 crew) | 
| Armament | 
  | 
The Pacinotti class consisted of two submarines launched in 1916 for the Royal Italian Navy (Regia Marina): Pacinotti and Guglielmotti. Both submarines served in World War I. Gugliemotti was lost in a friendly fire incident with a British warship. Pacinotti spent the war defending Italian shipping around Italy. Following the war Pacinotti was discarded.