Harbour trials will now begin to verify all systems, including major safety steps such as fuel loading, battery charging, and propulsion tests while moored. Once these activities are complete, the submarine will advance to sea trials, where navigation and diving tests will take place before delivery to the Spanish Navy.
The S-80 programme will provide the Navy with four conventional submarines fitted with modern capabilities. Navantia remains the Technical Design Authority for the class as the programme progresses.
