How to reach: To reach the tidal bench marks from Port Lions, AK by boat, start at the entrance to Settler Cove at position 57° 52.428’ N, 152° 51.598’ W, and proceed in Kizhuyak Bay on course 043.6°T for 2.321 nautical miles (NM) to 57° 54.213’ N 152° 46.435’ W, then proceed through Whale Passage on course 310.3° T for 3.074NM to 57° 56.201’ N 152° 50.851’ W where Pokati Point will be abeam to port. Continue through Kupreanof Strait on course 289.7° T for 14.533NM to 58° 01.093’ N 153° 16.660’ W with Outlet Cape abeam to port, then continue on course 279.6°T for 2.990NM until Malina Point is abeam to starboard at 58°01.593’ N 153° 22.226’ W. Alter course to 312.3°T for 3.422NM until Raspberry Cape is abeam to starboard at position 58° 03.897’ N 153° 27.007’ W and then proceed on course 036.1°T for 3.322NM to position 58° 06.582’ N 153° 23.328’ W. Finally, proceed on course 104.1° T to enter Driver Bay where the benchmarks are located along the rocky shore.