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Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
An overview of the UKHO Archive, accessing our archive and ordering copies of archive material.
Our flexible service can provide tidal information tailored to your specific requirements.
As a Public Authority, the UKHO makes relevant data sets available in compliance with the ‘Infrastructure for Spatial Information in Europe’ (INSPIRE) initiative.
The systematic survey of the UK’s coastal waters
We have a team of experts who specialise in technical aspects of maritime baselines, limits, zones and boundaries.
ADMIRALTY Tide Tables (ATT) format - times and heights of high and low waters, four months per page (A4 portrait)
How to propose a new survey, what data the UKHO requires for a nautical chart, and how to report safety critical information or errors in our products
This is a scanned version of a catalogue of charts and nautical publications produced by the Hydrographic Office available for purchase by the public in 1880
This is a scanned version of a catalogue of charts and nautical publications produced by the Hydrographic Office available for use by the Royal Navy (not the public) in 1919.
Times and heights of high waters only
We train students from foreign government hydrographic offices to acquire the core skills, knowledge and competence needed to be a marine cartographer.
UKHO obtains ISO certification
Find out about MCA’s bathymetric data collection programme, how to share data with MCA, and guidance for offshore developers.
Times and heights of high and low waters, split into morning and afternoon, one month per page, with a table drawn around the data (A4 portrait)
Times and heights of high and low waters, split into morning and afternoon, one month per page, without a table drawn around the data (A4 portrait)
High water-only format, split into morning and afternoon, four months per page (A4 landscape)
Times and heights of high water only, split into morning and afternoon, one month per page, with a table drawn around the data (A4 portrait)
Times of high water for each day of the year, contained on one page (A4 portrait)
Hourly heights, two months per page (A4 portrait)
Times and heights of high and low waters
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