5.2 Right-of-Way Rules (RRS Part 2)

The fundamental right-of-way rules determine which boat must keep clear in an encounter: Rule 10 — Opposite tacks: Port-tack boat keeps clear of starboard-tack boat.; Rule 11 — Same tack, overlapped: Windward boat keeps clear of leeward boat.; Rule 12 — Same tack, not overlapped: Boat clear aster...

Source: Rule 10, Rule 11, Rule 12, Rule 13, Rule 15

Send this to your friend — argument over.