Chart correction N46/21 — chart 37121
37121 12Ed. 08/06/11 LAST NM N45/21 N46/21 Add Depth 4.2 meters 51°05′01″N 1°12′54″E and extend depth contour (5-meter) E to enclose (UKHO ARCS 1991-4)
Source: NGA U.S. Notice to Mariners · edition: 12Ed. 08/06/11
Reference information — always verify against official Notices to Mariners before navigation.