Chart correction N33/22 — chart 18437
18437 2Ed. 12/14/12 LAST NM N15/22 N33/22 Add Buoy WOr, pillar, Fl Y with legend "Priv" 49°18′38.4″N 122°56′40.6″W Buoy WOr, pillar, Fl Y with legend "Priv" 49°19′56.8″N 122°55′48.9″W Buoy WOr, pillar, Fl Y with legend "Priv" 49°19′52.5″N 122°55′14.7″W Buoy WOr, pillar, Fl Y with legend "Priv" 49°18′38.3″N 122°56′22.2″W Buoy WOr, pillar, Fl Y with legend "Priv" 49°18′38.4″N 122°56′04.3″W (6/22 Ottawa)
Source: NGA U.S. Notice to Mariners · edition: 2Ed. 12/14/12
Reference information — always verify against official Notices to Mariners before navigation.