(a) A line drawn from the seaward extremity of the Coos Bay South Jetty to latitude 4321.9 N. longitude 12421.7 W. (Coos Bay Entrance Lighted Bell Buoy ``1''); thence to the seaward extremity of the Coos Bay North Jetty.
(b) A line drawn from the lookout tower located in approximate position latitude 4613.6 N. longitude 12400.7 W. to latitude 4612.8 N. longitude 12408.0 W. (Columbia River Entrance Lighted Whistle Buoy ``2''); thence to latitude 4614.5 N. longitude 12409.5 W. (Columbia River Entrance Lighted Bell Buoy ``1''); thence to North Head Light.
(c) A line drawn from latitude 4652.8 N. longitude 12412.6 W. (Grays Harbor Light to Grays Harbor Entrance Lighted Whistle Buoy ``2''); thence to latitude 4655.0 N. longitude 12414.7 W. (Grays Harbor Entrance Lighted Whistle Buoy ``3''); thence to Grays Harbor Bar Range Rear Light.