Chart correction N23/23 — chart 51159

51159   4Ed.  04/07/07  LAST  NM  N21/23  N23/23 Change Characteristic of beacon to Fl(4) Y 10s   37°11′27″N  6°56′24″W Characteristic of beacon to Fl(4) Y 10s   37°08′31″N  6°52′28″W (20(172)23 Cadiz)

Source: NGA U.S. Notice to Mariners · edition: 4Ed. 04/07/07

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