While the United States are a neutral power, American warships (not naval transports) must end their non-combat movement phase in one or more of the following sea zones depending on which game round it is:
During round 1: in sea zones 89, 101, 106, 116, 121, and/or 120
During round 2: in any sea zone listed for round 1, plus sea zones 90, 102, 107, 117, and/or 122
During round 3: in any sea zone listed for rounds 1 and 2, plus sea zones 103, 108, 118, and/or 123