Chart correction N8/21 — chart 44240
44240 9Ed. 11/1/14 LAST NM N2/21 N8/21 Delete Depth 23 meters 63°42.8′N 21°45.3′E Add Depth 20 meters, blue tint and enclosing depth contour (20-meter) centered 63°43.0′N 21°43.6′E Buoy YB, spar, double cone topmark points downwards [Q130.3] 63°35.1′N 21°51.8′E (16(187)18 Helsinki; FIN CH 957)
Source: NGA U.S. Notice to Mariners · edition: 9Ed. 11/1/14
Reference information — always verify against official Notices to Mariners before navigation.