Chart correction N26/21 — chart 37401
37401 10Ed. 3/11/17 LAST NM N5/21 N26/21 Change Range of beacon tower to 7M 46°03′57″N 1°23′43″W Range of light to 22/18M 46°00′36″N 1°10′40″W Height of light “Chanchardon” to 15m 46°09′43″N 1°28′24″W (11(60), 41(60)20 Brest)
Source: NGA U.S. Notice to Mariners · edition: 10Ed. 3/11/17
Reference information — always verify against official Notices to Mariners before navigation.