Chart correction N40/20 — chart 55104

55104 3Ed. 9/19/15 LAST NM N46/19 N40/20 Add “Explosives Dumping Ground” area [N23.1] bound by purple composite-line circle, radius 0.7 mile, centered 44°46′23″N 33°26′23″E (52(6163)19 St. Petersburg)

Source: NGA U.S. Notice to Mariners · edition: 3Ed. 9/19/15

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