Jurisdiction — In general — Territorial — Over ports and national waters — Crime committed by United States national on board vessel registered in United States while in harbour belonging to Federal Republic of Germany — Jurisdiction of flag State and territorial sovereign — The law of the United States

Jurisdiction — In general — Personal — Over nationals in respect of crimes committed abroad — Manslaughter committed by United States citizen on board United States vessel in territorial waters of Federal Republic of Germany — Whether certain proceedings before Federal Republic's courts constituted an assertion of jurisdiction by the territorial sovereign so as to oust jurisdiction of flag State — The law of the United States