| Country | Germany (DE) |
| UN/LOCODE | MRS |
| Name | Mariensiel |
| Name Without Diacritics | Mariensiel |
| Region | NI |
| Function Code | 1-3----- |
| Function | Port, Road |
| Status Code | AF (Approved by National Facilitation Body) |
| Date | 307 |
| Timezone | Europe/Berlin |
| Location (UN Format) | 5330N 00803E |
| Latitude Longitude | 53.5084, 8.0399 |