The Administration of the Republic of Moldova recognized next classification societies:

• Russian Maritime Register of Shipping — Rusia;
• American Bureau of Shipping
• Bureau Veritas
• Germanischer Lloyd
• Lloyd’s Register of Shipping
• Registro Italiano Navale
• Det Norske Veritas
• Nippon Kaiji Kyokai
• China Classification Society
• Korean Register of Shipping
• State Enterprise «Registrul Naval»
• Shipping Register of Ucraine
• Bulgarian Register of Shipping
• Maritime Bureau of Shipping
• Poland Register of Shipping
• Hellenic Register of Shipping
• Cyprus Bureau of Shipping
• International Register of Shipping
• Dromon Bureau of Shipping
• Maritime Lloyd
• International Naval Surveys Bureau (INSB)
• Turk Loydu
• Veritas Register of Shipping C.A. – Venezuela
• Intermaritime Certification Services (ICS Class) – Panama.
• Isthmus Bureau of Shipping (ClassIBS)
• Phoenix Register of Shipping (PH.R.S)
• Mediterranean Shipping Register (MSR)

On the Danube river for tankers only, the non tankers vessel see the other classes:

• Germanischer Lloyd
• Bureau Veritas
• Lloyd’s Register of Shipping
• Russian Maritime Register of Shipping
• Russian River Register
• Shipping Register of Ukraine