Chart correction N51/20 — chart 62580
62580 4Ed. 2/11/17 LAST NM N50/20 N51/20 Delete Buoy “ST 12” 29°05′29″N 48°29′30″E Buoy “ST 13” 28°48′00″N 48°44′36″E Buoy “ST 14” 28°41′09″N 48°39′39″E Buoy “ST 15” 28°41′29″N 48°26′30″E (47(5630)20 Taunton)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 2/11/17
Reference information — always verify against official Notices to Mariners before navigation.