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Our flexible service can provide tidal information tailored to your specific requirements.
An overview of the UKHO Archive, accessing our archive and ordering copies of archive material.
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
ADMIRALTY Tide Tables (ATT) format - times and heights of high and low waters, four months per page (A4 portrait)
We have a team of experts who specialise in technical aspects of maritime baselines, limits, zones and boundaries.
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
We train students from foreign government hydrographic offices to acquire the core skills, knowledge and competence needed to be a marine cartographer.
Find out about MCA’s bathymetric data collection programme, how to share data with MCA, and guidance for offshore developers.
The UKHO Archive Information Asset Register (IAR) contributes to the government-wide IAR, available through the Office of Public Sector Information.
Times and heights of high and low waters – alternative structure to Format 8
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 1839
Times and heights of high and low waters
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 as in Format 12, but accompanied by interval heights (any time interval from a minimum of 1 minute to a maximum of 120 minutes)
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
UKHO obtains ISO certification
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)
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