Chart correction N25/21 — chart 52121

52121 10Ed. 2/3/18 LAST NM N22/21 N25/21 Change Period of buoy to 13s 40°50′26″N 0°49′27″E and add “X” topmark Period of buoy to 13s 40°49′54″N 0°49′58″E and add “X” topmark Period of buoy to 13s 40°50′26″N 0°49′58″E and add “X” topmark Period of buoy to 13s 40°49′54″N 0°49′27″E and add “X” topmark (See N22/21) (20(136)21 Cadiz)

Source: NGA U.S. Notice to Mariners · edition: 10Ed. 2/3/18

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