1. Today Admiralty jurisdiction is exercised by the United Kingdom's High Court of Justice. 2. We hold the case to be within federal admiralty jurisdiction . 3. Eventually, the American Constitution formed in 1789 vested admiralty jurisdiction in federal district courts. 4. If it did, admiralty jurisdiction followed; if it did not, admiralty jurisdiction did not exist. 5. Held : The District Court has federal admiralty jurisdiction over Great Lakes's Limitation Act suit. 6. If it did, admiralty jurisdiction followed; if it did not, admiralty jurisdiction did not exist. 7. Great Lakes then brought this lawsuit in the United States District Court, invoking federal admiralty jurisdiction . 8. The District Court dismissed the suit for lack of admiralty jurisdiction , but the Court of Appeals reversed. 9. In this case, a straightforward application of the proposed test easily produces a finding of admiralty jurisdiction . 10. The exercise of admiralty jurisdiction , however, " does not result in automatic displacement of state law ."