begins at

50°42.500’N

126°52.300’W

 near Foster Rock 

then to

50°44.200’N

126°48.900’W

 near Holford Rocks 

then to

50°44.100’N

126°48.250’W

 near Holford Islets 

then to

50°41.325’N

126°48.504’W

 near Penfold Islet 

then to

50°41.800’N

126°50.900’W

 near Twin Islets