What is World Hydrography Day?

Celebrated on 21 June, World Hydrography Day is designed to raise awareness about hydrography and how it plays a role in improved knowledge of the seas and oceans.

World Hydrography Day was launched by the International Hydrographic Organization (IHO) and first celebrated in 2006. The date marks the anniversary of the founding of the IHO in 1921.

The theme this year is “Hydrographic Information – Enhancing Safety, Efficiency and Sustainability in Marine Activities”.


How are you celebrating World Hydrography Day?

Here at THS:UKI we would like to know how you plan to celebrate World Hydrography Day!

Let us know of any events you may be holding or attending, virtually or in-person, and we will share below!

Email to info@ths-uki.org


Send us your best survey photos

To celebrate World Hydrographic Day, we would like to invite you to send in your favourite survey photos, for a chance to have them shared in the summer soundings magazine!

This can be of your most impressive data set or of an offshore photo – as we know they can be some of the best sunrises!

Send your photo to info@ths-uki.org with a brief description

Please ensure you have permissions from employers before sending photos, as these will be used on social media and printed in our quarterly magazine.

Sunrise offshore


World Hydrography Day 2024 Events:

Thursday 20th June – Join the UK Hydrographic Office (UKHO) on the evening of Thursday 20 June to celebrate World Hydrography Day. For more information please visit: World Hydrography Day 2024