Chart correction N16/20 — chart 44442
44442 2Ed. 6/7/14 LAST NM N14/20 N16/20 Add Buoy Y, can, Fl(4) Y 20s [Q130.6] 56°32′01.2″N 20°57′40.2″E (3(125)20 Riga)
Source: NGA U.S. Notice to Mariners · edition: 2Ed. 6/7/14
Reference information — always verify against official Notices to Mariners before navigation.