Chart correction N42/21 — chart 53205
53205 4Ed. 7/29/17 LAST NM N31/21 N42/21 Add Foul ground area [K31.2], bound by dashed-line circle, radius 500 meters, centered 35°48′43″N 14°36′00″E (35/21 Valletta)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 7/29/17
Reference information — always verify against official Notices to Mariners before navigation.