Decreases of charted depths by as much as 4.5 meters/15 feet to 6 meters/20 feet have been reported in Yakutat Bay in an area adjacent to Schooner Beach from Point Manby to Kame Stream as a result of the February 28, 1979, earthquake. Mariners are urged to exercise extreme caution when navigating in this area, and throughout Yakutat Bay in general, as the magnitude of change is not known.