Chart correction N17/20 — chart 51223
51223 3Ed. 10/20/12 LAST NM N16/20 N17/20 Add Buoy “DATAWELL” (Wave recorder) Y, can, “X” topmark, Fl(5) Y 10s [Q130.6] 33°44′37″N 7°22′44″W (2(156)19 Brest) NM 17/20 SECTION I I-1.8
Source: NGA U.S. Notice to Mariners · edition: 3Ed. 10/20/12
Reference information — always verify against official Notices to Mariners before navigation.