What does ABS class notation OSR-C1?

ABS class notation OSR-C1 indicates that a vessel is designed for operation in open sea conditions with a specific capability for survivability and safety. The "OSR" stands for "Offshore Service," while "C1" designates the highest operational category, meaning the vessel can endure significant wave heights and adverse weather conditions. This classification ensures that the vessel meets stringent standards for offshore operations, including stability, strength, and communication systems.