Can modularity redefine naval warfare through interchangeable hull segments?

Cultures · Published 11 October 2026 Swipe more like this →

In short: The SIGMA class breaks the traditional mold of shipbuilding. By using a Ship Integrated Geometrical Modularity Approach, Dutch-built vessels can vary their dimensions and mission capabilities simply by rearranging hull segments, allowing navies to customize frigates and corvettes to their specific strategic needs.

Developed by the Damen Group, the SIGMA class relies on a modular design philosophy. This approach allows for significant flexibility; for instance, the SIGMA 9113 measures 91 meters in length with a 13-meter beam, while the SIGMA 10513 expands to 105 meters in length while maintaining that same 13-meter beam. This versatility is central to the series' appeal to international navies, ranging from Indonesia to Mexico. This scalability is evident in the SIGMA 10514HN, a specific variant proposed for the Hellenic Navy. Such adaptability ensures the platform remains relevant across various maritime roles.

The design's lineage traces back to the High Speed Displacement hull form developed by Marin Teknikk AS in the 1970s. Today, the series includes diverse models: large frigates like the SIGMA 11515 and 12516, and a newer 'Compact SIGMA' series designed for shorter ranges and mission endurance of up to two weeks. This modularity extends to construction; for example, a Mexican SIGMA 10514 LROPV was built using six modules, with four constructed by the Mexican Navy shipyard in Salina Cruz. This series also includes the SIGMA 9813 heavy corvettes used by Morocco. These vessels are notably equipped with vertical launch systems.

However, modularity does not guarantee immediate readiness. Some vessels, such as Indonesia's Martadinata-class, were originally delivered 'fitted for but not with' (FFBNW) certain essential systems, including the Rheinmetall Millennium CIWS and electronic warfare suites, which were installed later. Even with such flexibility, procurement remains a competitive battlefield, as seen in Oman and Brazil, where Damen lost bids to competitors like ST Engineering and TKMS respectively. In Colombia, the PES project involves a partnership with COTECMAR to develop new frigates. This collaboration aims to complete construction by 2030.

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