Chart correction N2/20 — chart 53313
53313 1Ed. 1/12/13 LAST NM N41/18 N2/20 Change Shape of buoy to pillar 42°33′49.8″N 8°45′42.1″E Add Light Fl G 4s 4m 3M 42°33′56.1″N 8°45′31.9″E “X” topmark to buoy 42°33′45.5″N 8°45′36.1″E Buoy (mooring) [Q40] 42°33′50.4″N 8°45′34.3″E (36(84)19 Brest; FRA CH 6980)
Source: NGA U.S. Notice to Mariners · edition: 1Ed. 1/12/13
Reference information — always verify against official Notices to Mariners before navigation.