Chart correction N30/20 — chart 95066
95066 14Ed. 1/6/18 LAST NM N29/20 N30/20 Delete Buoy 37°23′55″N 126°17′24″E (See N22/20) Add Beacon Y, “X” topmark, Fl(5) Y 20s 17m 9M [Q130.6] 37°23′54″N 126°17′24″E (26(443)20 Busan; KOR LL)
Source: NGA U.S. Notice to Mariners · edition: 14Ed. 1/6/18
Reference information — always verify against official Notices to Mariners before navigation.