167.76—In the approach to Boston, MA: Precautionary areas.
(a)
A precautionary area is established with a radius of 6.17 nautical miles centered upon geographical position 42°22.71′ N, 70°46.97′ W.
(b)
(1)
A precautionary area is established and is bounded to the east by a circle of radius 15.5 miles, centered upon geographical position 40°35.01′ N, 68°59.96′ W, intersected by the traffic separation schemes in the approach to Boston, MA, and Eastern approach, off Nantucket (part II of the TSS off New York) at the following geographical positions:
| Latitude | Longitude |
|---|---|
| 40°50.47′ N | 68°58.67′ W. |
| 40°23.75′ N | 69°13.95′ W. |
(2)
The precautionary area is bounded to the west by a line connecting the two TSSs between the following geographical positions:
| Latitude | Longitude |
|---|---|
| 40°48.03′ N | 69°02.95′ W. |
| 40°36.76′ N | 69°15.13′ W. |