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Data Provider: Welsh Government Ship arrivals at ports in Wales, by type of vessel
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Ship arrivals at ports in Wales, by type of vessel

Last update

November 2023 November 2023

Next update

November 2024 (Provisional)

Publishing organisation

Welsh Government

Source 1

Maritime and shipping statistics, Department for Transport



Languages covered

English and Welsh

Data licensing

You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see

General description

This dataset gives details on ship arrivals by ports in Wales up to the year 2022. Data are presented as the number of dead weight tonnes (millions).

Data collection and calculation

Up until 2017 the primary source used was commercially obtained vessel movement data from Lloyds List Intelligence (LLI) which was merged with other information on ship movements obtained by DfT through the system described above for all cargo or passenger carrying movements at major ports and the sea passenger survey. The three data sources were merged at the level of individual vessels calling at each port. The maximum number of calls from any of the three sources was taken as the final estimate.
From 2018 onwards, the data sources used to estimate vessel arrivals have changed. The primary source of data is now the Maritime and Coastguard Agency CERS system, though data from ferry companies, ports and shipping agents collected by DfT is also still used. Users should note that as a result the 2018 figures are not directly comparable with those for earlier years

Frequency of publication


Data reference periods

The statistics relate to cases in Wales from 2008 up to the year 2022.

Users, uses and context

These statistics are used both within and outside the Welsh Government to monitor trends in sea transport port arrivals and as a baseline for further analysis.

Rounding applied

Data are rounded to one decimal places. For entries where there are no data " . ".

Revisions information

Data for previous periods are routinely updated. Data for the current financial or calendar year may be revised with the release of next year’s data set.

Statistical quality

Timeliness and punctuality
The statistics presented covers traffic to and from ports in Wales.

Comparability and coherence
The Department for Transport produces a range of statistics relating to the maritime sector presenting information on domestic waterborne freight, ports, sea passengers, shipping fleets and sea farers.


Sea transport, statistical release:


Sea transport, port arrivals