The United States imports ~8 million barrels of oil per day. Nearly every barrel arrives by tanker. The tanker fleet is aging past its design life — and the ships that will replace them are built almost entirely in China.
Source: 13,589 tank ships in USCG registry. 933 new builds since 2020 (~156/year). 4,593 ships are past 25-year design life.
| Age Bracket | Count | % of Fleet |
|---|---|---|
| 2020+ (0-6 yr) | 933 | 6.9% |
| 2010-2019 (7-16 yr) | 2,519 | 18.5% |
| 2000-2009 (17-26 yr) | 3,052 | 22.5% |
| 1990-1999 (27-36 yr) | 1,205 | 8.9% |
| Pre-1990 (37+ yr) | 3,238 | 23.8% |
| Risk Level | Vessels | Definition |
|---|---|---|
| CRITICAL | 1 | Score 0-24: sanctioned + aged + class withdrawn — operating illegally |
| HIGH | 184 | Score 25-49: multiple compounding risk factors |
| MEDIUM | 4,414 | Score 50-74: aging with some risk indicators |
| LOW | 5,961 | Score 75-100: within normal maintenance parameters |
| Link | Dependency | Risk |
|---|---|---|
| US energy supply | ~8M bpd imported via tanker | Current |
| Tanker fleet | 44% of ships 20+ years old | Deteriorating |
| Fleet replacement | China: ~70% of new tanker construction | Critical |
| Korea + Japan | ~27% combined (Hyundai, Samsung, DSME) | Limited capacity |
| United States | ~0.1% of global commercial shipbuilding | Absent |
| US yard rebuild | 15-20 years minimum to restore capacity | No near-term solution |
Sanctioned vessels are 3.8x overrepresented in the 20-24 year age bracket compared to the general tanker population. These ships cannot go to certified yards for maintenance — they use shadow repair facilities or defer maintenance entirely. They are operating without P&I (liability) insurance. A catastrophic failure from an aging, uninsured, sanctioned tanker in a major shipping lane is the scenario no insurance company will cover and no US agency currently monitors in cross-referenced real time.
| Metric | Value | Unit | Source |
|---|---|---|---|
| vlcc count | 217 | vessels | Clarkson/SED |
| total cgt | 191 | million CGT | BIMCO |
| tanker dwt | 119 | million DWT | BIMCO |
| vlcc orders q4 | 88 | vessels | SED |
| suezmax delivery 2026 | 45 | vessels | Breakwave |
| vlcc delivery 2026 | 24 | vessels | Breakwave |
The Strait of Hormuz currently flows at 3.8M bpd — down from 20M bpd before the 2026 crisis. Rerouting via Cape of Good Hope adds 8,000-10,000 nautical miles per voyage, requiring 20-25% more ships for the same throughput. More ship-days are needed from an already-aging fleet. Every diverted voyage is one more cycle on a hull that has no certified replacement scheduled.
| Country | Production (TBPD) | Period |
|---|---|---|
| United States | 13,655 | 2025-12 |
| Saudi Arabia | 10,060 | 2025-12 |
| Russia | 9,977 | 2025-12 |
| Canada | 5,230 | 2025-12 |
| Iraq | 4,321 | 2025-12 |
| Iran | 4,220 | 2025-12 |
| China | 4,190 | 2025-12 |
| Brazil | 4,015 | 2025-12 |
| Flag State | Tankers | % of Fleet | Note |
|---|---|---|---|
| LIBERIA | 2,281 | 16.8% | Flag of convenience — minimal regulatory oversight |
| MARSHALL ISLANDS | 1,994 | 14.7% | Flag of convenience — minimal regulatory oversight |
| PANAMA | 1,473 | 10.8% | — |
| SINGAPORE | 1,010 | 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% | — |
The US Coast Guard tracks US-flag vessels. OFAC tracks sanctions. EMSA tracks EU port calls. No US agency cross-references: which vessels are sanctioned, past design life, uninsured, operating near US interests, and approaching failure risk — simultaneously. This dataset does.
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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