High Quality Content by WIKIPEDIA articles! Operation Lobster I (Unternehmen Hummer I in German) was an Abwehr plan to infiltrate three German agents into Ireland, (the territory formerly known as the Irish Free State), in July 1940. It is part of a wider series of missions carried out within the framework of Operation Lobster during World War II. The first agent recruited for the mission was Christian Nissen, aka Hein Mueck. In June 1940 he had been called to the Sabotage School at Brandenburg and asked to find a boat suitable for transporting three agents to Ireland. Nissen had served in World War I aboard the Imperial German Navy full rigged ship Melpomene. Melpomene had been captured by the Royal Navy 100 miles (160 km) west of the port of Queenstown, now Cobh, in County Cork. He was interned first at Templemore in Tipperary, then in Oldcastle, County Meath, and finally on the Isle of Man. Therefore, Nissen was familiar with the area.