Chart correction 3557 — chart 2483

Chart 2483 (Panel C, Gloucester Harbor) [ previous update 2446/25 ] NAD83 DATUM Insert depth, 22, with seabed type, R, and extend 30ft contour E to enclose 42° 34´·404N., 70° 41´·549W.

Source: UKHO Admiralty Notices to Mariners

Reference information — always verify against official Notices to Mariners before navigation.