There is a great book that covers the early days of the West German and East German Navies and the mine sweeping mission mentioned above. It's titled, The Three German Navies: Dissolution, Transition, and New Beginnings, 1945-1960, written by Douglas C. Peifer. It's also been translated and published in Germany by Winkler Verlag as Drei Deutsche Marinen. Auflösung, Übergänge Und Neuanfänge.