World Hydrography Day 2025 will be celebrated on 21st June with the theme “Seabed Mapping: Enabling Ocean Action” to promote safe navigation, ocean conservation, and the role of hydrography in sustainable marine development.
theIAShub | 19 Jun, 2025 | 649 | 0 |
World Hydrography Day 2025 is observed on 21st June 2025 to acknowledge the importance of hydrography in ensuring safe navigation, protecting marine conditions, and supporting sustainable aquatic development. Every year on this day, IHO raises awareness about hydrography and its importance in managing our water bodies. As this day is marked as the anniversary of the establishment of the International Hydrographic Organization (IHO) in 1921.
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What is World Hydrography Day?
World Hydrography Day was first celebrated by IHO in 2005 with the United Nations General Assembly adopting it the same year through Resolution A/RES/60/30. The World Hydrography Day 2025 Date June 21st, commemorates the IHO’s founding under its original name, the International Hydrographic Bureau, which was changed to the IHO in 1970. This day highlights the benefits of hydrography in the science of measuring and describing the physical features of seas, oceans, and navigable waters and its applications in navigation, environmental protection, and resource management.
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World Hydrography Day is celebrated every year on 21st June to honor the important role hydrography plays in maritime safety, global trade, and ocean conservation. This day also honors the foundation of the IHO that has been instrumental in advancing marine safety. The World Hydrography Day 2025 theme focuses on how hydrographic data is contributing to safe, efficient, and sustainable responsible marine activities. This day is marked by seminars, awareness campaigns, and educational events.
| Event | Details |
| Name | World Hydrography Day 2025 |
| Date | 21st June 2025 |
| World Hydrography Day 2025 Theme | Seabed Mapping: Enabling Ocean Action |
| Established By | International Hydrographic Organization (IHO) |
| First Celebrated | 2006 |
| Purpose | To raise awareness about hydrography and its importance in maritime safety, environmental protection, and sustainable development. |
| Key Focus Areas | Seabed mapping, sustainable marine use, safety of navigation, ocean governance |
| Global Participants | IHO member states, maritime agencies, naval and oceanographic institutions |
| Official Website | https://iho.int/ |
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Hydrography is the scientific study of the physical features of oceans, seas, rivers, lakes, and coastal areas. This involves measuring and describing aspects such as water depth (bathymetry), tides, currents, seabed topography, and potential hazards to navigation. The main goal of hydrography is to support safe and efficient maritime navigation through the production of accurate nautical charts.
Hydrographic data is important for port and harbor construction, offshore energy development, coastal zone management, environmental monitoring, and disaster risk reduction. Using advanced technologies like sonar systems, LiDAR, drones, and satellite imagery, hydrographers collect detailed information that informs decision-making in both public and private sectors.
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The World Hydrography Day 2025 Theme is “Seabed Mapping: Enabling Ocean Action.” This theme highlights how detailed and accurate mapping of the ocean floor forms the foundation for effective ocean governance, marine spatial planning, disaster risk reduction, and protection of biodiversity.
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The IHO was established in 1921 to provide a mechanism for consultation between governments on matters such as technical standards, safe navigation, and the protection of the marine environment. In 1970, the organization changed its name to the International Hydrographic Organization. In 2005, the IHO adopted the concept of World Hydrography Day, which was welcomed by the United Nations General Assembly in Resolution in 2006.
Every year, the IHO chooses a World Hydrography Day Theme to promote the importance of hydrography internationally, encourage multilateral cooperation, and foster effective collaboration in data exchange, charting, and standards development.
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World Hydrography Day is celebrated around the world through various activities organized by IHO Member States, international and national hydrographic organizations, and services. Some of the activities include
World Hydrography Day 2025 is a reminder of the importance hydrography plays in our daily lives, from ensuring safe maritime navigation to supporting environmental conservation and sustainable development. On this day we acknowledge the contributions of hydrographers around the world and commit to enhancing our understanding and maintenance of the world’s oceans and waterways.
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World Hydrography Day 2025 will be celebrated on Saturday, 21st June 2025.
The theme for World Hydrography Day 2025 is “Seabed Mapping: Enabling Ocean Action.” This highlights how mapping the ocean floor supports navigation safety, ocean governance, climate monitoring, and biodiversity protection.
World Hydrography Day is coordinated by the International Hydrographic Organization (IHO) in collaboration with its member states, maritime agencies, and scientific organizations.
World Hydrography Day was first celebrated in 2006, after being officially recognized by the United Nations General Assembly in 2005.
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