The S-82 ‘Narciso Monturiol’ submarine is the second ship in the S-80 series and has achieved a new milestone in its development by operating a diesel engine for the first time at the Cartagena shipyard in Spain.
The achievement was announced on Friday, March 20, 2026, and is seen as an important step in the so-called port trials, a series of tests carried out before the sea trial phase.
According to publicly available information, this procedure brings the submarine one step closer to being delivered to the Spanish Navy in the future, where it will be incorporated as part of the renewal and modernization program of the Navy’s submarine force.

S-82 ‘Narciso Monturiol‘silver S-80The class of submarines was developed to enhance the operational capabilities of the Spanish Navy through a platform with greater autonomy, stealth, and advanced technological capabilities.
The first start-up of the diesel engine is considered a critical moment in the ship’s schedule, confirming progress in core system integration and preparing for the future technology testing phase.

The S-80 program is one of the strategic projects of the Spanish Navy’s defense industry, and each development stage is closely watched by both the military and industrial base.
Source and image: Spanish Ministry of Defense / @Defensagob. This content was created with the help of AI and reviewed by our editorial team
