The first diagram shows that the basic right-of-way rules between two boats racing are quite different under the two sets of rules. At first read, you might think the two sets of rules are quite similar because the government rules grant a starboard-tack boat right of way over a port-tack boat and, when boats are on the same tack, they grant a leeward boat right of way over a windward boat (see COLREG 12). But that’s not always the case. There is a government rule that overrides those basic rules. It states that, when one boat is overtaking another, the overtaking boat must keep clear, even if the overtaking boat is on starboard tack, and even if the overtaking boat is the leeward boat (see COLREG 13). In the first diagram, if the racing rules apply, under Rule 10 Stu—on starboard—has right of way over Deb, Paul, and Phil, all of whom are on port. Also, under Rule 11, Phil has right of way over both Paul and Deb, and Paul has right of way over Deb.