Greene Point Rapids (50°26'N., 125°30'W.) are dangerous; in their vicinity the fairway of Cordero Channel is less than 0.2 mile wide. In the rapids, the currents attain velocities of 4 to 7 knots. The flood current sets 145°. Slack at HW and slack at LW occur 1 hour and 35 minutes and 1 hour and 25 minutes, respectively, before the corresponding slack water in Seymour Narrows. Lyall Island (50°27'N., 125°36'W.) lies in the W entrance to Cordero Channel and a light is shown from its SW extremity. A rock, which dries 1.2m, lies on a shoal spit extending about 0.1 mile S from the island. A rock, with a depth of less than 1.8m, lies in the vicinity of a detached shoal, with a depth of 5.5m, located close NE of the island.

Location