Bathymetries and sea bottom morphology

Bathymetric rises are performed with a multibeam echo sounder, using the necessary technical equipment to carry out the most precise works.

The multibeam echo sounder used is a Reson SeaBat 8101. Its maximum working depth is 300 m. It gets a scope of 150º. (seven times working depth), which allows us to perform bathymetries with a scope of 100 % over the working area. It fulfils IHO law specifications, as well as USACE law class 1. We also study sea bottom materials (sand, rock, rock fragments etc.) and edit bathymetric and morphological maps.

Accessory equipment for bathymetries  

The multibeam echo sounder needs some accessory equipment in order to perform measurements of centimetric precision. This equipment compensates the ship’s movements in real time (roll, pitch, yaw) and gives a feedback about its right position and direction.

The ship position is constantly referenced through DGPS Trimble systems with differential bases on land and through high precision Omnistar satellite positioning.