I believe (looking at tea leaves) you came from Pearl, crossing the international date line on the way to your present postion. (stirrs the tea leaves) Yes, and submarine school is to the east of the international date line. The tea leaves say there is a bug that makes your line vanish when you cross the line. This can be fixed by using Trigger Maru which cheats by starting you west of the line, hence eliminating the bug triggering event when you cross it. See, tea IS better than coffee.
