Underway, vessels:
Don’t attempt to cross the bows of another vessel, especially a larger one, when underway, unless you are certain you can clear her. You will be clear of the other vessel, providing she holds the same course, when you can see her anchor on the further bow. In meeting a large sailing vessel, head to head, don’t pass close along her lee side; your boat may become becalmed, soak in, and get a nasty swipe from a boom end.