St. Michaels harbor entrance encompasses all of the area enclosed by a line beginning at a point on shore at or near Lat. 38° 47.687’ N., Long. 76° 12.873’ W., then running 153° (True) to a point, at or near Lat. 38° 47.335’ N., Long. 76° 12.644’ W., then running 243° (True) to Parrott Point, at or near Lat. 38° 47.203’ N., Long. 76° 12.972’ W., then running 338° (True) to a point, at or near Lat. 38° 47.397’ N., Long. 76° 13.072’ W. This area has a 6-knot speed limit Saturdays, Sundays, and State holidays, during the boating season.