Chart correction N52/21 — chart 51109
51109 6Ed. 09/08/12 LAST NM N47/21 N52/21 Add Buoy "Molhe N" Y, spherical, Fl(5) Y 20s with legend "ODAS" [Q58] 41°10′14.2″N 8°43′05.6″W (Plan) Add Buoy "Molhe N" Y, spherical, Fl(5) Y 20s with legend "ODAS" [Q58] 41°10′14.2″N 8°43′05.6″W (10(317)21 Lisboa)
Source: NGA U.S. Notice to Mariners · edition: 6Ed. 09/08/12
Reference information — always verify against official Notices to Mariners before navigation.