Chart correction 3557 — chart 1227

Chart 1227 [ previous update 3063/25 ] NAD83 DATUM Insert depth, 31, with seabed type, R (a) 42° 38´·09N., 70° 35´·37W. Delete depth, 54, close NE of: (a) above Insert depth, 44, with seabed type, R, and extend 6fm contour SE to enclose (b) 42° 35´·71N., 70° 37´·87W. Delete depth, 54, close SW of: (b) above Insert depth, 13, with seabed type, R (c) 42° 31´·55N., 70° 46´·36W. Delete depth, 24, close NE of: (c) above Insert depth, 23, with seabed type, R 42° 24´·89N., 70° 54´·95W. depth, 1, with seabed type, R (d) 42° 24´·98N., 70° 57´·91W. Delete depth, 15, close NE of: (d) above

Source: UKHO Admiralty Notices to Mariners

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