Collection
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | Next 20 |
| Name | IMO | Flag | Build/Gross | Type | |
| Obrovac | 8026593 | PAN | 1987 / 4060 | Tanker | |
| Ocean Breeze I | 8001440 | PAN | 1980 / 3323 | Tanker | |
| Ocean Lion | 7010901 | LBR | 1970 / 79001 | Tanker | |
| Ocean Pioneer | 8022133 | JPN | 1981 / 4500 | Tanker | |
| Ocean Pride | 9114969 | ITA | 1997 / 9914 | Tanker |
|
| Ocean Rainbow | 7912991 | LBR | 1980 / 21245 | Tanker | |
| Ocean Spirit | 8002092 | LBR | 1982 / 39534 | Tanker | |
| Ocean Thistle | 8002092 | GBR | 1982 / 39534 | Tanker | |
| Ocean Victor | 7916868 | LBR | 1981 / 50169 | Tanker | |
| Ocean Victoria | 8022420 | PAN | 1981 / 6791 | Tanker | |
| Oceania I | 7638911 | PAN | 1977 / 971 | Tanker | |
| Ochakov | 5260796 | RUS | 1955 / 8229 | Tanker | |
| Octavian | 5260849 | NOR | 1954 / 26248 | Tanker | |
| Odabo | 7203699 | GBR | 1972 / 521 | Tanker | |
| Oderstern | 9035838 | IOM | 1992 / 5480 | Tanker | |
| Ogden Ottawa | 7395337 | GBR | 1976 / 23462 | Tanker | |
| Ohio | 9234678 | MHL | 2001 / 23235 | Tanker | |
| Oinoussian Spirit | 9231212 | BHS | 2002 / 62247 | Tanker | |
| Ojars Vacietis | 8207305 | LVA | 1985 / 10944 | Tanker | |
| Okarina | 8420232 | NOR | 1987 / 16555 | Tanker | |
| Okeanis | 9144782 | GRC | 1997 / 56127 | Tanker |
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