| No | Name | Abbreviation | Year of birth | Headquarters | IACS Member |
| 1 | American Bureau of Shipping | ABS | 1862 | Houston | Yes |
| 2 | Asia Classification Society | ACS | 1980 | Tehran | No |
| 3 | Biro Klasifikasi Indonesia | BKI | 1964 | Jakarta | No |
| 4 | Brazilian Register of Shipping | RBNA | 1982 | Rio de Janeiro | No |
| 5 | Bulgarian Register of Shipping | BRS (БКР) | 1950 | Varna | No |
| 6 | Bureau Veritas | BV | 1828 | Paris | Yes |
| 7 | China Classification Society | CCS | 1956 | Beijing | Yes |
| 8 | CR Classification Society | CR | 1951 | Taipei | No |
| 9 | Croatian Register of Shipping/ Austrian Veritas | CRS | 1858/ 1949 | Split | Yes |
| 10 | Danforth Marine Surveys & Certification Services | DMSCS | 2014 | India | No |
| 11 | DNV GL | DNV GL | 1864 | Oslo | Yes |
| 12 | Guardian Bureau of Shipping | GBS | 1996 | Syria | No |
| 13 | Hellenic Register of Shipping | HR | 1919 | Piraeus | No |
| 14 | Indian Register of Shipping | IR Class | 1975 | Mumbai | Yes |
| 15 | Intermaritime Certification Services | ICS Class | 2005 | Panama | No |
| 16 | International Classification of Ship Malaysia | ICSM | 2008 | Kuala Lumpur | No |
| 17 | International Naval Surveys Bureau | INSB | 1977 | Piraeus | No |
| 18 | International Register of Shipping | IRS | 1993 | Miami | No |
| 19 | Iranian Classification Society | ICS | 2007 | Tehran | No |
| 20 | Isthmus Bureau of Shipping | IBS | 1995 | Panama | No |
| 21 | Korean Register of Shipping | KR | 1960 | Busan | Yes |
| 22 | Lloyd’s Register | LR | 1760 | London | Yes |
| 23 | Mediterranean Shipping Register | MSR | 2012 | Great Britain | No |
| 24 | Nippon Kaiji Kyokai (ClassNK) | NK | 1899 | Tokyo | Yes |
| 25 | Orient Register of Shipping | ORIENT Class | 2000 | Philippines | No |
| 26 | Overseas Marine Certification Services | OMCS | 2004 | Panama | No |
| 27 | Pacific Marine Services | PMS | 2013 | Ajman | No |
| 28 | Phoenix Register of Shipping | PHRS | 2000 | Piraeus | No |
| 29 | Polish Register of Shipping | PRS | 1936 | Gdańsk | Yes |
| 30 | Register of Shipping Albania | ARS | 1970 | Durres | No |
| 31 | Registro Cubano de Buques | RCB | 1982 | La Habana | No |
| 32 | Registro Internacional Naval | RINAVE | 1973 | Lisbon | No |
| 33 | Registro Italiano Navale | RINA | 1861 | Genoa | Yes |
| 34 | Russian Maritime Register of Shipping | RS | 1913 | Saint Petersburg | Yes |
| 35 | Shipping Register of Ukraine | RU (РУ) | 1998 | Kyiv | No |
| 36 | Ships Classification Malaysia | SCM | 1994 | Shah Alam | No |
| 37 | Tasneef-Emirates Classification society | TASNEEF | 2012 | Abu Dhabi | No |
| 38 | Turk Loydu | TL | 1962 | Istanbul | No |
| 39 | Union Marine Classification Society | UMCS | 1970 | Union of Comoros | No |
| 40 | Venezuelan Register of Shipping | VRS | 2008 | London | No |
| 41 | Vietnam Register | VR | 1964 | Hanoi, Vietnam | No |
Fakultas Teknik Universitas Diponegoro