According to Görtz, Kathleen consisted of a map, on which was the suggestion of a German landing similar to that at Narvik, in the vicinity of Derry — an amphibious assault. The aim of the plan was the conquest of Northern Ireland via a simultaneous IRA insurgency and use of German forces. The IRA were to be concentrated in the county of Leitrim on the border facing Lough Erne and Upper Lough Erne awaiting the arrival of German forces in Northern Ireland. However, the IRA plan gave no thought to how German troops were to be brought to Derry, how control of the sea approaches was to be obtained or where and how the coast of Northern Ireland was fortified. Görtz described the plan at the time and its limitations thus: "The plan was therefore completely useless. It nearly broke my heart, since it came from the IRA Chief of Staff."