UK Hydrographic Office

S-100 in focus comes to Sea Japan 2026. Join our in-person seminar in Tokyo to explore the emerging S-100 framework. Wednesday 22 or Thursday 23 April 2026 11:10 – 12:30 (JST) Tokyo Big Sight – Presentation Room F, West Hall 4 Register now: eu1.hubs.ly/H0sJZQK0

Missed our S-100 in focus webinar last week? The recording is now available on our website, catch up on the discussion as we shared exclusive insights from live S-100 sea trials: eu1.hubs.ly/H0sBwb20 Thank you to all those who joined us live, we hope you enjoyed the session.

We’re thrilled to announce Patrick Kelly BSc (Hons) PGCert PGDip AFRIN, Software Product Development Manager at @OSIMaritime Systems, will join our panel of experts on Wednesday 4 March at our S-100 in focus: Sea trial insights webinar. Register today: eu1.hubs.ly/H0rQrnV0

Members of the UKHO have helped reveal the intricate details of an underwater seamount and a new steep ridge near the Turks and Caicos Islands. As hydrographic experts, we are proud to support the @BlueBeltProgramme's Beyond The Reef expedition.

Join our upcoming live webinar, S-100 in focus: Sea trial insights. Hear early insights from ongoing sea trials and ask your questions during a live Q&A. Wednesday 4 March Choose a time that suits you: 09:00 - 10:00 UTC 13:00 - 14:00 UTC Register now: eu1.hubs.ly/H0rxxcL0

We were delighted to welcome Gideon Amos OBE, Member of Parliament for Taunton and Wellington, to officially open our newly refurbished onsite nursery last week. The Tops Mini Mariners nursery is a key part of the UKHO’s family-first approach to working life. @topsdaynursery

Join us for our live webinar as we share exclusive learnings from our live sea trials and how you can prepare for the transition to S-100. 📅 Wednesday 4 March 🕐 Choose a time that suits you: 09:00 - 10:00 UTC 13:00 - 14:00 UTC Register now: eu1.hubs.ly/H0rd-lL0

When will type-approved S-100 ECDIS be available? With type-approved S-100 ECDIS expected to be available from 2028, our guide helps you to plan with confidence as the maritime industry transitions to the @IHOhydro new universal hydrographic model. eu1.hubs.ly/H0r3jHR0

It's great to reflect on our success at last year's MOD Quality Awards. Congratulations to our Geodesy team and Susannah Carlson for their well-deserved recognition.

Working with @shom_fr and multiple ECDIS manufacturers, we're testing S-100 data standards on real vessels, with real mariners, across operationally challenging routes. Read more about the trials: eu1.hubs.ly/H0qD45X0

Season's greetings from the UK Hydrographic Office. Wishing you all the warmest of seasonal greetings and good health and happiness for 2026. With our thoughts and best wishes to those serving at sea. #SeasonGreetings

As key S-100 milestones approach, we’ve outlined the full S-100 timeline and what it means for the maritime industry. Read our complete guide to the transition to the @IHOhydro's new hydrographic data model: eu1.hubs.ly/H0qvscc0

We've launched S-100 sea trials with @shom_fr, which form part of the @IHOhydro's international testbed framework. This cross-industry collaboration brings together hydrographic offices, OEMs and ports to test S-100 in real-world scenarios. Read more: eu1.hubs.ly/H0qdXrN0

Today is #AntarcticaDay, marking the 1959 #AntarcticTreaty signed by 12 nations to keep the continent a natural reserve for peaceful purposes. This chart shows early navigation of Antarctica. This week, our team is attending the @IHOhydro Hydrographic Commission on Antarctica.

In October, we hosted the UK's first cross-government geodesy and positioning working group, bringing together 19 government bodies. @SciTechgovuk has since announced new measures to strengthen resilience in satellite-based systems. Read more: eu1.hubs.ly/H0p-vph0

Earlier this month, we held our first Channel Forum in London, bringing together @ADMIRALTYOnline Distributors for collaboration under the theme 'Together Through Maritime Change'. The discussions will inform our planning priorities and reinforce the importance of partnership.

Today on Remembrance Day, we reflect on those armed forces members who made the sacrifice to protect our nation. We honour their memory and thank them for their courage and service. #RemembranceDay

It was great to engage with members across the hydrographic community at #HYDRO25. The UK CSM demonstrated how it has established a collaborative seabed mapping community among over 30 public sector organisations. Thanks to @THS_UKI for organising a great event. #SeabedMapping

New guidance on GNSS and AIS interference. Our guide with @ShipownersClub helps crews understand jamming and spoofing, use alternative positioning methods and maintain confident navigation at sea. Read the full guide: eu1.hubs.ly/H0pglBt0

Have you explored our interactive S-100 experience? Discover how the @IHOhydro's next generation maritime data standards could transform navigation through dynamic data layer interactions, with clear explanations and animations: eu1.hubs.ly/H0p5mBz0