Roberto Ivens

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"Roberto Ivens" July 26, 1917, the commander of the minesweeper "Roberto Ivens", First Lieutenant, Raul Cascais, gives orders to his crew to begin clearing operations along the Tagus River. There are reports of German submarines operating close to the area between the mouths of the Sado and the Tagus, suspicions heightened by the dubious sinking of the sailboat "Loanda" on the 13th, close to the coast, at Cabo da Roca. The "Roberto Ivens" is a vessel placed in the service of the Navy, due to th…