The Choptank Marina boat basin encompasses the area within the confines of the Choptank Marina at Choptank, Maryland beginning at a point at or near Lat. 38° 40.835' N., Long. 75° 57.073' W., then running 123° (True) to a point, at or near Lat. 38° 40.830' N., Long. 75° 57.063' W., and running to the head of the marina. This area has a 6-knot speed limit all year.