Chart correction N19/20 — chart 52147
52147 1Ed. 12/2/17 LAST NM N5/20 N19/20 Change Period of buoy to 6s 39°52′05.8″N 4°18′34.5″E Period of buoy to 6s 39°51′54.3″N 4°18′35.7″E (12(106)20 Cadiz)
Source: NGA U.S. Notice to Mariners · edition: 1Ed. 12/2/17
Reference information — always verify against official Notices to Mariners before navigation.