Line Break on March 27, 2026: Costa Smeralda Drifts in Port

Von Eustace Bagge, <a href="https://creativecommons.org/licenses/by/3.0" title="Creative Commons Attribution 3.0">CC BY 3.0</a>, <a href="https://commons.wikimedia.org/w/index.php?curid=94569047">Link</a>
A brief moment of shock in Italy! On March 27, 2026, the mooring lines of the Costa Smeralda snapped in the port of Civitavecchia near Rome. The 337-meter-long Excellence-class cruise ship unexpectedly broke loose from the pier and drifted. The incident impressively demonstrates the enormous physical forces acting on modern floating giants.

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The cause of the accident was an extreme weather situation. Severe wind gusts with speeds of up to 83 km/h hit the massive side of the ship. This so-called windage area is over 13,000 square meters on the Costa Smeralda and acted like a giant sail in that moment. The resulting lateral forces were ultimately too massive for the port facility's holding capacities.

Modern mooring lines (HMPE lines) are extremely tear-resistant, but they have barely any stretch. When the wind strikes in harsh gusts, dangerous shock loads occur. As soon as the first line gave way under this overload on March 27, the remaining lines had to immediately take over the immense weight. This led to a so-called cascading failure—the lines snapped in rapid succession.

Since the ship was shortly before its planned departure for Savona, the bridge was fortunately already fully staffed and able to react quickly. Through the immediate use of the main propulsion, bow and stern thrusters, as well as the quick help of local port tugs, a larger disaster was prevented. However, the incident makes one thing clear: Ports must adapt their infrastructure even better to growing ship sizes in the future, for example through automated mooring systems.