Chart correction N31/21 — chart 17499

17499 1Ed. 7/1/05 LAST NM N36/20 N31/21 Add Buoy Y, pillar, Fl(5) Y 20s with legend “ODAS” [Q58] 49°18′06″N 123°21′24″W Chartlet from Subsection I-2 49°18′00″N 123°14′00″W (4/19, 1/20 Ottawa)

Source: NGA U.S. Notice to Mariners · edition: 1Ed. 7/1/05

Reference information — always verify against official Notices to Mariners before navigation.