The table shows which Flag States having authorised DNV as Recognised Security Organisation (RSO), scope of authorisation and specific flag requirements, if any.
| Flag State | SSP approval | Initial / Renewal Verification | Issuance of ISSC | Comments |
| Algeria | Yes | Yes | Interim ISSC by DNV. Full term ISSC by Flag. | |
| Antigua & Barbuda | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Aruba | Yes | Case by case | Interim and short term (5 months) ISSC by DNV. Full term ISSC by Flag. | Company to request Flag to authorise DNV for each ship. |
| Bahamas | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Bahrain | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Bangladesh | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Barbados | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Belgium | Yes | Yes | Interim ISSC by DNV. Full term ISSC by Flag. | |
| Belize | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Bermuda | No | Case by case | Case by case authorisation required for interim and short term ISSC. Full term ISSC issued by Flag. | Company to request Flag to authorise DNV for each audit. |
| Brazil | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Cayman Islands | No | Case by case | Interim and short term (5 months) ISSC by DNV when case by case authorised for shipboard verification. Full term ISSC by Flag. | Company to request Flag to authorise DNV for each ship. |
| Cyprus | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Denmark | Yes | Yes | Interim and full term ISSC are issued by DNV. | Authorisation is not covering passenger ships. These are handled by the Flag. |
| Dominica, Commonwealth of | No | Yes | Short term (5 months) ISSC by DNV. Interim and full term ISSC by Flag. | |
| Egypt | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Estonia | Case by case | Case by case | When case by case authorised, interim and full term ISSC are issued by DNV. | Company to request Flag to authorise DNV for each ship. |
| Ethiopia | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Faroe Islands | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Fiji | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Germany | No | Yes | Interim and full term ISSC are issued by the Flag. | |
| Gibraltar | Case by case | Case by case | When case by case authorised, interim and full term ISSC are issued by DNV. | Company to request Flag to authorise DNV for each ship. |
| Greece | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Honduras | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Hong Kong | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Iran | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Ireland | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Isle of Man | No | Case by case | Interim and short term (5 months) ISSC by DNV if case by case authorised. Full term ISSC by Flag. | Company to request Flag to authorise DNV for each audit. |
| Jamaica | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Jordan | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Kuwait | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Latvia | No | Case by case | Interim and short term (5 months) ISSC by DNV if case by case authorised. Full term ISSC by Flag. | Company to request Flag to authorise DNV for each ship. |
| Liberia | No | Yes | Interim and full term ISSC are issued by DNV. | |
| Lithuania | No | Case by case | Interim and short term (6 months) ISSC by DNV if case by case authorised. Full term ISSC by Flag. | Company to request Flag to authorise DNV for each ship. |
| Luxembourg | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Madeira | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Malaysia | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Malta | Yes | Case by case | Interim and full term ISSC are issued by DNV when case by case authorised. | Initial verification based on an authorised interim does not need a separate authorisation. Intermediate and renewal verifications do not need additional authorisation from the Flag. Company to request Flag to authorise DNV for each ship. |
| Marshall Islands | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Mauritius | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Morocco | No | Yes | All types of ISSCs are issued by the Flag. | |
| Netherlands | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Netherlands Antilles | Yes | Case by case | Interim and short term (5 months) ISSC by DNV. Full term ISSC by Flag. | Company to request Flag to authorise DNV for each ship. |
| Norway | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Panama | Yes | Yes | Interim and short term (5 months) ISSC by DNV. Full term ISSC by Flag. | |
| Philippines | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Qatar | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Saudi Arabia | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Seychelles | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Singapore | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Sri Lanka | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| St.Vincent and the Grenadines | Yes | Yes | Interim and short term (5 months) ISSC by DNV. Full term ISSC by Flag. | |
| Switzerland | Case by case | Case by case | Interim and full term ISSC are issued by DNV when case by case authorised. | Company to request Flag to authorise DNV. When authorised, authorisation is valid for all ships of the Company. |
| Thailand | Case by case | Case by case | Interim and full term ISSC are issued by DNV when case by case authorised. | Company to request Flag to authorise DNV for each ship. |
| Tonga | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| Turkey | Yes | Yes | Interim and full term ISSC are issued by DNV. | Upon approval of the SSP, the Company shall forward a certified copy of the SSP to the Flag Administration and also submit to the Administration any amendments and changes in the SSP, together with the reasons thereof. |
| Tuvalu | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| United Arab Emirates | Yes | Yes | Interim and full term ISSC are issued by DNV. | |
| United Kingdom | Case by case | Case by case | Interim and full term ISSC are issued by DNV when case by case authorised. | Company to request Flag to authorise DNV for each ship. |
| Vanuatu | Yes | Yes | Interim and full term ISSC are issued by DNV. | General authorisation is for ships with DNV class. Case by case authorisation for non-DNV classed ships may be given upon request from the Company. |