Chart correction N7/21 — chart 62580
62580 4Ed. 2/11/17 LAST NM N51/20 N7/21 Add Buoy “Z3” Y, pillar, Oc Y [Q130.6] 28°44′30″N 48°28′00″E Buoy “Z4” Y, pillar, Oc Y [Q130.6] 28°45′00″N 48°31′00″E Buoy “Z9” Y, pillar, Oc Y [Q130.6] 28°39′12″N 48°35′30″E (3(261)21 Taunton)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 2/11/17
Reference information — always verify against official Notices to Mariners before navigation.