The Albacora class was a diesel-electric attack submarine (SSK) developed for the Portuguese Navy based on the French .
In 1964, the Portuguese government ordered the construction of four of this class at the Dubigeòn-Normándie Shipyard to create the 4th Submarine Flotilla.
With the first submarine commissioned on 1 October 1967, the Portuguese Navy started to have a submarine able to operate in both coastal and oceanic zones, especially in the Portuguese exclusive economic zone.
The last Albacora-class submarine in service, NRP Barracuda, made its final mission in 2010. The class was replaced by two Type 209PN/Type 214PN submarines.
| Country | Pennant | Name | Completed | Commissioned | Decommissioned |
|---|---|---|---|---|---|
| Pakistan Navy | S134 | PNS Ghazi (former NRP Cachalote) | 1969 | Acquired 1975 | 2006 |
| Portuguese Navy | S163 | 1967 | 1 October 1967 | 2000 | |
| S164 | 1968 | 4 May 1968 | 2010 | ||
| S165 | 1969 | 25 January 1969 | 1975 (Transferred) | ||
| S166 | 1969 | 1 October 1969 | 2005 | ||