| Thae Pyong San Sanctioned entity | Owned or controlled by OMM | - | - | |
| Amnokgang Shipping Co. Ltd. | Controlled by OMM | - | - | |
| Great Hope | Assigned the vessel crew | - | - | |
| Hwang Gum San 2 Debarred entity · Sanctioned entity | Former ISM manager and operator · Owned or controlled by OMM | | | |
| Pho Phyong | Connected | - | - | |
| Ocean Maritime Management Brazil | Ocean Maritime Managament Brazil is an OMM branch | - | - | |
| Korea Tonghae Shipping Company Sanctioned entity | OMM has owned and/or operated at least 35 vessels, most of which were originally owned and/or controlled by Korea Tonghae Shipping Company | | - | |
| Gold Star 3 Sanctioned entity | Owned or controlled by OMM | - | - | |
| Hoeryong Shipping Co Ltd Debarred entity · Export controlled · Sanctioned entity | Associated | - | - | |
| Wang Jae San | OMM's employees settle port charges on behalf of the vessel's owners | - | - | |
| Yongjin Ship Management Company Limited Debarred entity · Export controlled · Sanctioned entity | Controlled by OMM | - | - | |
| Korean International Crew Training Centre | Partner | - | - | |
| Yon Phung Ho | Former manager and operator | - | | |
| Rak Won 2 Debarred entity · Sanctioned entity | Former ISM manager and operator · Owned or controlled by OMM | | | |