Almarin, a Spanish manufacturer of AtoN, has completed the design and turnâkey supply of aids to navigation for Puerto Brisa (La Guajira, Colombia). The company provided 14 buoys: twelve lateral marks, one safe water and one special mark. All buoys, from its âGuíaâ range, were provided with self contained lights equipped with satellite monitoring. The G2200T model was used for the channel dredged at 17m and the G2400T was selected for its additional volume in the open water marks.