Chart correction N21/20 — chart 37051
37051 (INT 1572) 6Ed. 9/13/18 LAST NM N49/19 N21/20 Delete Depth 13.7 meters 51°29.40′N 0°52.68′E Substitute Depth 9.7 meters for 10.6 meters 51°28.05′N 0°48.92′E and extend depth contour (10-meter) and blue tint N to enclose Add Depth 13.1 meters 51°29.39′N 0°52.74′E (9(1054), 12(1505)20 Taunton)
Source: NGA U.S. Notice to Mariners · edition: 6Ed. 9/13/18
Reference information — always verify against official Notices to Mariners before navigation.