IH performs hydrographic survey to refer to debris from the “Roberto Ivens” mine hunt

On February 23, 2016, the Hydrographic Brigade (BH) carried out a hydrographic survey (LH) about 10 km south of the fort of São Julião da Barra, in order to investigate the position of the possible destruction of the first World War, the mine fighter “Roberto Ivens”.

This LH was requested by the Institute of Contemporary History and carried out with multi-beam probe installed in the “Atlanta” survey boat.