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As a Public Authority, the UKHO makes relevant data sets available in compliance with the ‘Infrastructure for Spatial Information in Europe’ (INSPIRE) initiative.
We have a team of experts who specialise in technical aspects of maritime baselines, limits, zones and boundaries.
An overview of the archive, accessing the Archive, and how to order copies of Archive material
UKHO obtains ISO certification
The systematic survey of the UK’s coastal waters
Find out more about the UK Hydrographic Office, where we're working to unlock a deeper understanding of the world's oceans.
Enabling safe and sustainable marine economies across Commonwealth Small Island Developing States (SIDS).
Admiralty Tide Tables (ATT) format - times and heights of high and low waters, four months per page (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 use by the Royal Navy (not the public) in 1945 covering Europe.
Our flexible service can provide tidal information tailored to your specific requirements.
A serial history of technical problems dealt with by Admiralty departments.
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 1825
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 1914
This document gives an overview of progress made in the first 2 years of the programme.
The latest information regarding the UK's Fishery Limits
Information on CME Programme outputs providing marine data and capacity building in the Caribbean.
Our corporate brochure contains detailed information on the work we do, our history and the specialist services we offer.
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