Admiralty law is quite complex, and does not necessarily coincide with U.S. law, thereby creating many jurisdictional issues. Common law precedents (such as fair and equitable settlement) do not necessarily apply. Originally developed to encourage shipping commerce, admiralty law has only very recently recognized the rights of crewmen. In the U.S., this was accomplished through the Jones Act, which gives crewmen the right to trial by jury in negligence cases, for example.