The S-82 “Narciso Monturiol” submarine, the second unit of the S-80 series, reached a new milestone in its development after firing up its diesel engines for the first time at the Cartagena shipyard, Spain.
This progress was announced on Friday, March 20, 2026, and is another important stage in the so-called port tests, namely a series of tests carried out before entering the evaluation phase at sea.
According to published information, this procedure brings the submarine closer to its official handover to the Spanish Navy, which will operate the vessel as part of its submarine fleet renewal and modernization program.

S-82 “Narciso Monturiol” is part of the class S-80which was developed to expand the operational capabilities of the Spanish Navy with a platform that has greater autonomy, higher stealth and more advanced technological capabilities.
This initial activation of the diesel engines is considered a key moment in the ship’s construction schedule, as it confirms the progress of integration of key systems and prepares the submarine for the next phases of technical testing.

The S-80 program is one of the strategic projects of Spain’s maritime defense industry, and any new progress in the development of these ships is closely monitored by both the military sector and the country’s industrial base.
Source and image: Ministerio de Defensa / @Defensagob. This content was created with the help of AI and has been reviewed by the editorial team
