Working with the UKHO

Find out more about how you can collaborate and share your data with the UK Hydrographic Office.

Ship in Felixstowe harbour

The UKHO relies on port and harbour authorities to provide information from within port limits and their approaches. 

In keeping with the Port Marine Safety Code and under existing legislation, harbour masters have a duty in law to take all reasonable steps to inform masters of visiting ships of any changes affecting navigation, where a lack of knowledge might endanger their ships.

All new information shared with the UKHO is assessed for accuracy and any resulting changes are incorporated into its ADMIRALTY products and services. For example, an assessment can result in updates to ADMIRALTY charts and publications through Notices to Mariners (NMs), Radio Navigational Warnings (RNWs) or even the publication of a New Edition.

Why collaborate with the UKHO?


Sharing your data with UKHO can support:

  • Enhanced port operations through the provision of products, services and expertise
  • Maintenance of official ADMIRALTY products and services for all UK waters
  • Safe maritime navigation through fast and efficient updates
  • Effective data governance with UKHO’s data custodianship
  • Effective management of third-party licensing of your data
  • Closer collaboration to help shape the next generation of navigation services
Hand pointing at data on a screen

Data exchange

If you have data that you would like to share with the UKHO, please refer to the documents and guidance available below.

You can also get in touch with our Ports Engagement team if you have any queries or would like to make direct contact. Please use the form below and a member of the team will be happy to respond. 

Port Agreements


Maintaining close relationships between the UKHO and ports is hugely important to ensure the safety of the UK’s international seaborne trade. To support effective data exchange between port authorities and the UKHO, we have developed long-term Port Agreements which are beneficial to both parties. 

We are always looking at ways to collaborate more closely, so would welcome and strongly recommend that Harbour Masters consider setting up and maintaining Port Agreements. To do so, please get in touch using the contact form below if you seek any further advice.

Contact us

Guidance and supporting documents

Access a range of guidance, supporting documents and forms to help you submit your data.



Find out more about bathymetry and survey methods, as well as guidance on data cleaning and data formats. This can be used to assist with completing the H275 metadata form or as a standalone introduction to the world of hydrography.

Survey specifications


This document details the requirements for marine geospatial data collection in shallow and deep water, using both swath bathymetry and lidar techniques.

Supporting documents


Download our H275 document for guidance and best practice on how to deliver bathymetric data to the UKHO. You can also access ‘Report of Survey’ templates for acoustic and lidar surveys and associated documents for submitting different data types.

Harbour Masters' Guide


The Harbour Masters’ Guide to Hydrographic and Maritime Information Exchange is a joint publication from the UKHO and UK Harbour Masters’ Association.

Tidal observation documents


Improving tidal predictions relies on the capture and analysis of tidal observations. If you have tidal data to share, please download the H276 form which outlines data and metadata requirements. 

Tidal data services


Find out more and access the various tidal products and services we offer using the links below. 


Meet our team

Our Ports Engagement team is responsible for the way we collaborate with ports around the UK and overseas.

Head of UK Data Partnerships Paul Marks

Paul Marks

Job description
Head of UK Data Partnerships

As Head of UK Data Partnerships, Paul is responsible for developing and maintaining partnerships with UK data suppliers including ports and harbours. On behalf of the UK Hydrographic Office, Paul works to facilitate and improve data exchange for the benefit of both parties.

Katie Leedham

Katie Leedham

Job description
Ports Partnering & Engagement Officer

As Partnering and Engagement Officer for ports, Katie manages the day-to-day relationships and partnerships with the port sector.  Katie regularly engages with the ports and harbour community at visits and events, and acts as the main point of contact for any queries related to port agreements or the broader port sector.


Contact the UKHO

To get in touch with our Ports Engagement team and find out more about how you can work with the UKHO, please complete the form below.

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