Chart correction N26/21 — chart 53141
53141 6Ed. 7/2/11 LAST NM N25/21 N26/21 Add “Anchoring, Fishing, Diving and Stopping Prohibited” area [N2.1] bound by purple composite-line circle, radius 500 meters, centered 40°54′26″N 12°55′16″E “Anchoring, Fishing, Diving and Stopping Prohibited” area [N2.1] bound by purple composite-line circle, radius 500 meters, centered 40°54′52″N 12°56′10″E (10(8)21 Genova)
Source: NGA U.S. Notice to Mariners · edition: 6Ed. 7/2/11
Reference information — always verify against official Notices to Mariners before navigation.