Re: Know the rules!
Groggy has a good point. In crossing situations, some skippers react well before others do. I've been racing since I was nine. I might be fine, sailing on Port tack, and planning to miss your transom by a foot when we cross. You might think that we were too close for comfort, and alter course to pass a boatlength behind me instead. Is that my fault?
Perhaps hailing "Starboard" would help alert the other skipper to your presence, and get him thinking about telling you what he plans to do about the crossing. He may, of course, think he's going to pass in front of you, with no need for either of you to do anything. The may think it's obvious he's going to pass behind you, with no need for either of you to do anything then, either. He may also be wrong. That's why even the stand-on vessel has to pay attention.