At the 6th PIANC Mediterranean Days, Siport21, in collaboration with MDC Ingénierie, presented a study focused on the optimization of nautical access to ports through probabilistic analysis of Under Keel Clearance (UKC). The research introduces a transformative methodology, certified by DNV, that enhances port operability and safety for large vessels navigating under complex environmental conditions
Applying a traditional deterministic approach to UKC assessment often results in conservative, simplified and generic access rules. Instead, Siport21 proposes a dynamic, data-driven protocol that integrates tide, wave conditions, vessel squat, and specific ship behaviour modeling to define precise and reliable access criteria.
Siport21 has long applied probabilistic analysis methodologies using integration techniques and Monte Carlo simulations. These allow for the precise determination of risk level during port approach in waves, quantifying the probability of bottom contact, as well as establishing operating windows and limits based on a preselected acceptable hazard probability and local weather conditions (wave distribution, tidal range).
This is not just a theoretical approach, but it is already being applied as a forecast in several ports across Morocco, Spain, and Latin America, including Jorf Lasfar, Safi, Mohammedia, Nador, and real-time control system in A Coruña. The result is a powerful planning tool together with a reliable safety control procedure.
The methodology aligns with the SmartPort and Industry 4.0 vision, offering port authorities and terminal operators a scalable tool to manage nautical operations with high precision. It supports the optimization of dredging works, analysis of access windows, updating of operation standards or effects of speed on access restrictions due to squat.
This approach represents a significant leap forward in how we manage port accessibility. By moving from static rules to probabilistic, real-time systems, Siport21 empowers ports to operate more efficiently while maintaining the highest safety standards.
