Hydrographic data provides a wealth of useful information to scientists conducting many types of research and hydrographers contribute to a healthy ocean, vibrant coastal communities and a growing maritime economy. World Hydrography Day is a way to ensure that hydrographers and hydrography-related activities receive adequate funding and recognition.
World Hydrography Day, 21 June, was adopted by the International Hydrographic Organization as an annual celebration to publicise the work of hydrographers and the importance of hydrography, particularly in the promotion of safe navigation in international waters and ports, and the protection of marine reserves.
The International Hydrographic Bureau was established in 1921 for the purpose of providing a mechanism for consultation between governments on such matters as technical standards, safe navigation and the protection of the marine environment. In 1970 the name was changed to the International Hydrographic Organization (IHO). The IHO is actively engaged in developing standards and interoperability, particularly in relation to the challenges brought about by digital technologies.
On 29th June 2005, the UN adopted a resolution by which 21st June each year is to be celebrated as the World Hydrographic Day. The UN has also urged all states to work with IHO to promote safety of International Navigation, Maritime Development and Protection of vulnerable Marine Areas.
The date chosen for World Hydrography Day is the anniversary of the founding of the International Hydrographic Organization.