Chart correction N20/23 — chart 44186

44186   3Ed.  09/03/16  LAST  NM  N18/23  N20/23 Add Beacon Fl Y 4s (occas)   59°26′06″N  18°55′51″E (See N12/23) (958(17525)23 Norrkoping)

Source: NGA U.S. Notice to Mariners · edition: 3Ed. 09/03/16

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