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The home of UK Hydrographic Office on ÒÁÈËÖ±²¥. The UK Hydrographic Office (UKHO) is a world-leading centre for hydrography, delivering data and expertise to support safe, secure and thriving oceans.

• Updated: 22 November 2023

An overview of the UKHO Archive, accessing our archive and ordering copies of archive material.

• Updated: 23 August 2023

Careers in the UK Hydrographic Office

• Updated: 14 December 2023

As a Public Authority, the UKHO makes relevant data sets available in compliance with the ‘Infrastructure for Spatial Information in Europe’ (INSPIRE) initiative.

• Updated: 1 April 2021

Our flexible service can provide tidal information tailored to your specific requirements.

• Updated: 29 August 2014

As a trading fund of the Ministry of Defence (MOD), we produce a global range of charts, publications and digital services for the Royal Navy and other defence customers.

• Updated: 30 April 2025

We have a team of experts who specialise in technical aspects of maritime baselines, limits, zones and boundaries.

• Updated: 10 July 2019

The UK Hydrographic Office (UKHO) is a world-leading centre for hydrography, delivering data and expertise to support safe, secure and thriving oceans.

• Updated: 11 March 2025

The systematic survey of the UK’s coastal waters

• Updated: 12 September 2024

A new report reveals the significant economic and environmental benefit of seabed mapping within the UK Exclusive Economic Zone (EEZ).

• Updated: 30 January 2025