Chart correction N21/20 — chart 53183
53183 14Ed. 6/25/11 LAST NM N15/20 N21/20 Add Solid line (breakwater) [F4.1] joining 38°13′43.7″N 15°38′07.1″E 38°13′44.1″N 15°38′04.7″E 38°13′47.0″N 15°38′04.6″E (See N12/20) (1(7)20 Genova)
Source: NGA U.S. Notice to Mariners · edition: 14Ed. 6/25/11
Reference information — always verify against official Notices to Mariners before navigation.