-American Bureau of Shipping (ABS)
-Bureau Veritas SA — Registre international de classification de navires et d'aeronefs (BV)
-China Classification Society (CCS)
-Croatian Register of Shipping (CRS)
-DNV AS
-KR (Korean Register)
-Indian Register of Shipping (IRCLASS)
-Lloyd's Register Group LTD (LR)
-Nippon Kaiji Kyokai General Incorporated Foundation (ClassNK)
-Polish Register of Shipping (PRS)
-RINA Services S.p.A.