Chart correction N47/23 — chart 53101
53101 9Ed. 07/24/21 LAST NM N35/23 N47/23 Add Submarine cable [L30.1] joining 44°23′40″N 8°56′49″E 44°23′26″N 8°56′51″E 44°23′11″N 8°57′15″E 44°22′41″N 8°57′35″E 44°21′17″N 8°58′06″E 44°20′02″N 8°58′16″E 44°19′14″N 8°58′06″E Submarine cable [L30.1] joining 44°23′40″N 8°56′45″E 44°19′54″N 9°00′00″E 44°19′12″N 9°01′30″E 44°18′02″N 9°01′57″E (20(1)23 Genova; 43(90)23 Brest)
Source: NGA U.S. Notice to Mariners · edition: 9Ed. 07/24/21
Reference information — always verify against official Notices to Mariners before navigation.