Trilateral Statistics

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Statistical Terms Merchant fleet by flag of registration
Maritime transport
It includes data on the size of the world merchant fleet by flag of registration and by type of ship. Data are presented in thousands of dead-weight tons (DWT). In addition, the table presents countries’ or region’s respective shares in the world fleet as well as their shares of a given ship-type in the country’s/region’s total fleet. From 2011 onwards, the figures on the numbers of ships, as well as the data on ship-sizes in gross tonnage (GT) have become available.
UNCTAD estimates based on data supplied by
(1) Lloyds Register Fairplay (up to 2010)
(2) Clarkson Research Services (from 2011 onwards)
Temporal Coverage
The figures cover seagoing propelled merchant ships of 100 gross tons and above, excluding inland waterway vessels, fishing vessels (from 2011 onwards only), military vessels, yachts, and offshore fixed and mobile platforms and barges (with the exception of FPSO - floating production, storage and offloading vessels - and drillships).
For ships that do not have DWT recorded in the raw data, UNCTAD estimates DWT based on the GT and type of the ship. For 2020, 17582 ship of a total of 98170 (17.9 per cent) lacked a DWT measure. These are primarily small ships representing 0.34 per cent of the estimated total DWT of the world fleet. This proportion is relatively bigger for some individual economies and ship types.