We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use ÌìÃÀÓ°Ôº, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
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
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
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
HM Nautical Almanac Office provides the daily rise, set and twilight times in December for the United Kingdom and Ireland
A summary of the UK Marine Geospatial Community’s Evidence Base and Recommendations
Enabling safe and sustainable marine economies across Commonwealth Small Island Developing States (SIDS).
The UKHO Archive Information Asset Register (IAR) contributes to the government-wide IAR, available through the Office of Public Sector Information.
HM Nautical Almanac Office provides the daily rise, set and twilight times in January for the United Kingdom and Ireland
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 water only, 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, with a table drawn around the data (A4 portrait)
This document gives an overview of progress made in the first 2 years of the programme.
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 1839
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)
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve ÌìÃÀÓ°Ôº, we’d like to know more about your visit today. .