position . External links U-boat.net Detailed history of Johan Maurits van Nassau Detailed history of Johan Maurits van Nassau Ships built in Vlissingen World War II sloops of the Netherlands World War II shipwrecks in the North Sea 1932 ships Maritime incidents in May 1940 Ships sunk by German aircraft Gunboats sunk by aircraft Ships built by Koninklijke Maatschappij De Schelde