Second S-80 Class Submarine Hits the Water and Prepares for Testing Phase

19 November 2025

(Image credit: Navantia)

The S-82 Narciso Monturiol submarine, the second of the S-80 class, is now afloat in Navantia’s shipyard in Cartagena as it prepares for the final stages of its construction and commissioning, including harbor and sea trials.

The submarine sits in the water after a long and delicate maneuver, carried out over several hours using a floating dock and involving a series of essential tasks and checks to ensure the operation was conducted safely, both inside and outside the submarine.

From now on, harbor trials will verify all systems, with key safety milestones such as fuel loading, battery charging, and propulsion tests while moored. Once these trials are completed, sea trials (including navigation and diving tests) will begin, paving the way for delivery to the Spanish Navy.

The S-80 program will provide the Spanish Navy with four state-of-the-art conventional (non-nuclear) submarines and establish Navantia as the Technical Design Authority.