Waverider buoy deployed in Riječki Zaljev

4/8/2022 9:00:00 AM

The Hydrographic Institute of the Republic of Croatia (HHI) has installed a directional waverider buoy in Riječki zaljev, in position 45°19.588'N 14°23.738'E (WGS 84 coordinate system), with a light signal (group of five yellow flashes every 20 seconds) visible 4 NM. Navigation is prohibited within a radius of 100 m from the waverider buoy.

The waverider buoy is used to measure height, direction and period of wind-generated waves and surface temperature of the sea. The wave height data are available in real time on the HHI website https://www.hhi.hr/

The Hydrographic Institute of the Republic of Croatia has a long tradition of measuring wind-generated surface waves in the Adriatic. These measurements are carried out to ensure safe transport of people and goods in the Croatian part of the Adriatic, management of the sea and seabed resources, and environmental protection.

Latest

6/19/2026
World Hydrography Day 2026 – the S-100 standard and new challenges for navigational safety and marine spatial management

Every year on 21 June, World Hydrography Day is celebrated to highlight the vital importance of hydrography in securing the safety of navigation, protecting the marine environment, sustainably managing marine spaces and resources, and fostering a deeper understanding of our seas and oceans. The International Hydrographic Organization (IHO) has chosen the 2026 theme "Transforming how ocean data is shared", emphasising the critical role of modern standards and technologies...  

read more World Hydrography Day 2026 – the S-100 standard and new challenges for navigational safety and marine spatial management
6/12/2026
The Hydrographic Institute of the Republic of Croatia enhances capabilities for implementing new IHO standards

From 8 to 12 June 2026, the Hydrographic Institute of the Republic of Croatia (HHI) hosted an advanced training course provided by Teledyne CARIS for colleagues from the HHI Cartographic department on the production of S-101 products within the framework of the International Hydrographic Organization (IHO) S-100 standard....

read more The Hydrographic Institute of the Republic of Croatia enhances capabilities for implementing new IHO standards
6/9/2026
New official publication released: Sailing Directions, Adriatic Pilot – Croatian Coast available in English

The Hydrographic Institute of the Republic of Croatia (HHI) has published a new official nautical publication, Sailing Directions, Adriatic Pilot – Croatian Coast, 2026 Edition. This marks the inaugural English edition of the Sailing Directions for the Croatian coast. It ensures that critical safety-of-navigation information for the Croatian sector of the Adriatic Sea is more readily accessible...

read more New official publication released: Sailing Directions, Adriatic Pilot – Croatian Coast available in English