| Flag State | Tankers | % of Fleet |
|---|---|---|
| LIBERIA | 2281 | 16.8% |
| MARSHALL ISLANDS | 1994 | 14.7% |
| PANAMA | 1473 | 10.8% |
| SINGAPORE | 1010 | 7.4% |
| MALTA | 950 | 7.0% |
| GREECE | 689 | 5.1% |
| BAHAMAS | 670 | 4.9% |
| UNITED STATES | 577 | 4.2% |
| NORWAY | 548 | 4.0% |
| HONG KONG | 373 | 2.7% |
| DENMARK | 247 | 1.8% |
| CYPRUS | 229 | 1.7% |
| ISLE OF MAN | 200 | 1.5% |
| ITALY | 192 | 1.4% |
| CHINA | 120 | 0.9% |
| BERMUDA | 117 | 0.9% |
| INDIA | 115 | 0.8% |
| UNITED KINGDOM | 109 | 0.8% |
| CAYMAN ISLANDS | 108 | 0.8% |
| PORTUGAL | 107 | 0.8% |
| FRANCE | 103 | 0.8% |
| SAUDI ARABIA | 88 | 0.6% |
| CANADA | 72 | 0.5% |
| MALAYSIA | 72 | 0.5% |
| UNKNOWN | 71 | 0.5% |
Liberia and Marshall Islands are the dominant flags of convenience for the global tanker fleet. Together they account for 31% of all tank ships calling at US ports. Flag state choice affects regulatory oversight, safety standards, and sanctions enforcement.
Data sources: U.S. Treasury (OFAC SDN), U.S. Energy Information Administration, European Maritime Safety Agency (EU MRV), U.S. Coast Guard (PSIX), Global Fishing Watch (GFW satellite AIS), AISStream.io. All data cryptographically attested on Polygon blockchain.
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