(a) A circular precautionary area with a radius of 7 miles is established centered upon 4027.50 N, 7349.90 W.
(b) A precautionary area is established between the traffic separation scheme ``Eastern Approach, off Nantucket'' and the traffic separation scheme ``In the Approach to Boston, Massachusetts.'' (1) The precautionary area is bounded to the east by a circle of radius 15.5 miles, centered upon geographical position 4035.00 N, 6900.00 W, and is intersected by the traffic separation schemes ``In the Approach to Boston, Massachusetts'' and ``Off New York'' at the following geographic positions: ------------------------------------------------------------------------
Latitude Longitude------------------------------------------------------------------------
4050.33 N 6857.00 W
4023.75 N 6914.63 W------------------------------------------------------------------------
(2) The precautionary area is bounded to the west by a line connecting the two traffic separation schemes between the following geographical positions: ------------------------------------------------------------------------
Latitude Longitude------------------------------------------------------------------------
4036.75 N 6815.16 W
4048.00 N 6903.33 W------------------------------------------------------------------------ [CGD 84-004, 52 FR 33589, Sept. 4, 1987, as amended by USCG-2010-0351, 75 FR 36287, June 25, 2010]