A definitive comparative analysis of the world’s leading classification societies, this SolarisTech Research report ranks all 12 IACS members using a robust 15-variable scoring system. Covering the years 2019–2024, the study evaluates each society’s strengths in areas such as technical expertise, flag authorizations, digital platforms, cybersecurity, sustainability guidance, and overall cost-effectiveness. It highlights top performers like DNV, ABS, and Lloyd’s Register, while also offering insights into the rising competitiveness of ClassNK, CCS, RINA, and IRClass. With forward-looking insights into trends through 2029, this is an essential benchmarking tool for shipowners, builders, and regulators navigating today's classification landscape.