Chart correction N21/24 — chart 37120
37120 4Ed. 09/19/15 LAST NM N18/24 N21/24 Add Depth 0.9 meter 51°36.2′N 1°34.7′E Depth 0.1 meter 51°36.4′N 1°35.2′E Depth 2.8 meters 51°39.7′N 1°37.8′E Depth 2.8 meters 51°38.8′N 1°37.7′E Depth 4.4 meters 51°38.3′N 1°37.7′E (17(1880), 19(2107)24 Taunton)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 09/19/15
Reference information — always verify against official Notices to Mariners before navigation.