Chart correction 2212 — chart 1227
Chart 1227 [ previous update 145/24 ] NAD83 DATUM Insert depth, 12, enclosed by 3fm contour (a) 42° 21´·51N., 70° 53´·57W. Delete depth, 32, close S of: (a) above
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.