Chart correction 2918 — chart 1227
Chart 1227 [ previous update 726/23 ] NAD83 DATUM Delete GfFl.Y.2s (4 buoys) 42° 41´·00N., 70° 27´·00W.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.