Chart correction 278 — chart 1947
Chart 1947 [ previous update 2677/24 ] NAD83 DATUM Amend light to, Al.Fl.WR.20s15M 48° 08´·61N., 122° 45´·29W.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.