begins at

 49°12.929’N

 123°56.468’W

 north of Horswell Bluff 

then to

 49°12.929’N

 123°56.033’W

 Horswell Channel Buoy 

then to

 49°11.927’N

 123°55.513’W

 McKay Point 

then westerly following the shoreline of Newcastle Island to

 49°11.700’N

 123°56.821’W

 Shaft Point 

then to

 49°12.427’N

 123°57.571’W

 Brandon Islands 

then to

 49°12.600’N

 123°57.350’W

 Pacific Biological Station