Top hydrographic survey on the island of São Jorge

Between July 10 and August 21, 2019, the Hydrographic Brigade carried out a top-hydrographic survey on the island of São Jorge, in the central group of the Azores Archipelago.

This work arose in the framework of a partnership between the Hydrographic Institute and the Regional Government of the Azores, with the main objective of obtaining updated hydrographic information. The survey focused mainly on the south coast of São Jorge, notably between Ponta dos Rosais and Calheta.

This survey was carried out on board the “Vive Waters” vessel of the Regional Government of the Azores using a high resolution multi-beam probe system. It counted on a team of 4 people from the Hydrographic Institute and the two elements that constitute the garrison of “Live Waters”.

In addition to the acquisition of the bathymetry between 200 m deep and the coastline, the topographic survey of the main port structures and aids to the navigation of the ports of Velas and Calheta was also carried out. In addition, the topography of some of the Navy's buildings was carried out: the Lighthouse of the Roses, the Sailing Maritime Delegation and the Top Lighthouse.

The mission had about 140 hours of surveying and the hydrographic survey of an area of approximately 45 km2, equivalent to 4500 football fields.

The following is a period of processing and conformity assessment of the work carried out in order to ensure the quality of the acquired hydrographic information.