Hi, During a sailing competition, just before the start, when the foredeck man tries to position the boat so that they will be one of the first boats to cross the starting line, he calls to the helmsman: "Right starboard, starboard right!" And then, as they come dangerously close to another boat, he yells: "Left port! LEFT!" Why does he call both "right" and "starboard", and why both "left" and "port"? They mean the same thing, don't they? And I thought "starboard" and "port" would be the only words you would use at sea? Thanks!