Insights · Data · Ship-owning nations
Greece owns more shipping than any other country on Earth — roughly 398 million tonnes of carrying capacity. But the answer flips depending on one accounting choice, and on a far older distinction: who owns a ship is not the same as whose flag it flies.
Ask which country dominates world shipping and you will get more than one right answer, depending on what exactly you are counting. The headline figure is the carrying capacity of the fleet owned by a nation's companies, measured in deadweight tonnage — and on that measure Greece is the world's largest ship-owning nation, with about 398 million DWT (UNCTAD, 2024). It is a remarkable lead for a country of just over ten million people, built over generations of private, family-controlled shipping houses.
But the table is not quite that simple. The order of the top countries — and even which one sits at number one — turns on a handful of methodological decisions about how owners are grouped and how their economies are defined. Before the numbers make sense, it helps to separate two questions that are often confused.
The single most common mistake in reading shipping statistics is to treat "ship-owning nation" and "flag state" as the same thing. They are not. A ship-owning nation is the country where the beneficial owner — the company or family that actually controls and profits from the vessel — is based. A flag state is the country whose register the ship is entered on, whose law governs it at sea, and whose ensign it flies.
These two facts routinely point in completely different directions. Greek shipowners overwhelmingly register their vessels under foreign flags — Liberia, the Marshall Islands, Panama and Malta among the favourites — for reasons of tax, regulation and crewing flexibility. So a tanker owned outright by an Athens family may sail its entire career under a Liberian flag and never once register in Greece. The owner is Greek; the flag is Liberian. Both statements are true at the same time, and only one of them shows up if you look at flag registries alone.
This is why beneficial ownership is the figure that matters when you want to know who really controls the world's fleet. Flag-of-convenience registers such as Panama and Liberia top the league tables for registered tonnage, but those tonnes belong, economically, to owners in Greece, China, Japan and a handful of other countries. For more on why a ship's register and its owner so rarely coincide, see our explainer on flag states.
Counting each economy separately, UNCTAD's Review of Maritime Transport 2024 places three countries clearly ahead of the rest by the deadweight capacity their owners control. Deadweight tonnage (DWT) measures how much cargo, fuel and stores a ship can carry, so it is the natural yardstick for raw fleet power.
| Rank | Owner economy | Owned fleet (DWT) |
|---|---|---|
| 1 | Greece | ~398 million |
| 2 | China | ~347 million |
| 3 | Japan | ~241 million |
Greece leads on the strength of bulk carriers and crude tankers — the heavy-lifting workhorses of the dry and wet trades. China, in second place, owns a fleet built around its own enormous import and export needs, from iron-ore carriers to container ships, and is closing the gap fast as it expands. Japan, third, retains a deep, mature ownership base across tankers, bulkers and car carriers despite decades of slower growth. Other major owners — Singapore and, depending on the count, Hong Kong — follow close behind, though their precise tonnage shifts with reporting date and methodology and we leave specific figures to UNCTAD's own tables.
The figures are approximate by design. Rankings of this kind move by a few million DWT from one reporting date to the next as ships are delivered, sold and scrapped, so it is sensible to read them with a "~" in front and to treat the gaps, not the decimals, as the real story.
Here is the nuance that quietly decides who wears the crown. UNCTAD reports mainland China and Hong Kong as separate economies. On that basis, Greece's roughly 398 million DWT sits ahead of mainland China's roughly 347 million DWT, and Greece is number one.
Count China and Hong Kong as one, and China owns more shipping than any nation on Earth. Count them apart, and Greece does. The same fleet, two different answers.
If, instead, Hong Kong's substantial owned tonnage is combined with the mainland — a defensible choice, since Hong Kong is part of China — the combined Chinese total comfortably exceeds Greece's, and China ranks first. Neither approach is "wrong"; they answer slightly different questions. The crucial point for anyone quoting these statistics is to state which convention they are using. "Greece is number one" and "China is number one" can both be accurate in the same breath, and the difference is nothing more than where you draw a line on a map.
National league tables are useful for the big picture, but the practical questions are usually about a single ship: who owns this vessel, and whose flag does it fly? That is exactly the pair of facts the Marifest registry is built to separate cleanly. Every vessel file records the flag state alongside the beneficial owner, so the two are never silently conflated.
Owners are resolved through their GLEIF Legal Entity Identifier wherever one exists, which ties a ship to a precise, verifiable legal entity rather than a vague company name — the same identity layer that makes ownership chains auditable. You can trace a vessel's owner and flag in the Marifest registry → for any of the fleet, and run it through compliance screening to see whether either the ship or the entity behind it appears on a sanctions list. When the owner is Greek and the flag is Liberian, Marifest shows you both — and the gap between them is often where the interesting story lies.
How Marifest uses it
National rankings start with a single fact about a single ship: who owns it and where it is registered. Marifest records both for every vessel, resolves owners to verifiable legal identities, and never lets a flag register stand in for who really controls the hull.
Each vessel file separates the registered flag state from the beneficial owner, so a Liberian-flagged ship owned in Greece shows up as exactly that — two distinct facts, never merged.
Where a company has a GLEIF Legal Entity Identifier, the owner is tied to that verifiable entity rather than a loose name, making ownership chains auditable across the registry.
Reflaggings are part of a ship's file, so you can see how a vessel has moved between registers without losing track of who has owned it throughout.
Compliance screening runs against the vessel and the entity behind it across OFAC, EU, UN and UK lists — catching a listed owner even when the flag looks ordinary.