I'm not sure that I can think of any examples of pirates deliberately staying out of each other's way, but they frequently worked in consort with one another.

I'm not sure you could call it coordination though, as it was rarely planned, more in the nature of chance encounters leading to short- or long-term partnerships.

For example, Henry Every took his ship, the Fancy, to the Strait of Bab-el-Mandeb at the mouth of the Red Sea because it was an ideal spot to wait for the annual Indian "Pilgrim Fleet", which would have to pass through the narrow channel on its return from the Hajj to India. But while he was waiting there FIVE more pirate vessels turned up with the same idea. Every had the biggest ship by a long way, so they all agreed to form a squadron with the Fancy as the flagship. However, the Pilgrim Fleet managed to slip past them in the night and during the ensuing chase across the Indian Ocean some of the smaller vessels fell behind, so that when the pirates caught up with their greatest prize near the Indian coast, only the Fancy and two other ships were present.