Chart correction N18/21 — chart 44140
44140 10Ed. 2/15/14 LAST NM N5/21 N18/21 Add Submarine cable [L30.1] joining 56°22.2′N 18°50.0′E 56°16.7′N 18°36.8′E 55°55.2′N 18°36.7′E 55°54.1′N 18°50.0′E (2(67)21 Riga)
Source: NGA U.S. Notice to Mariners · edition: 10Ed. 2/15/14
Reference information — always verify against official Notices to Mariners before navigation.