Chart correction 2280 — chart 2427
Chart 2427 [ previous update 1173/24 ] NAD83 DATUM Insert depth, 25, enclosed by 3fm contour (a) 42° 31´·38N., 70° 50´·48W. Delete depth, 32, close NW of: (a) above depth, 34, close SE of: (a) above Insert depth, 23, extend 3fm contour NW to enclose (b) 42° 31´·43N., 70° 50´·72W. Delete depth, 31, close SW of: (b) above depth, 31, close NE of: (b) above depth, 3, close SE of: (b) above Amend dredged depth to, 31ft (2021), centred on: 42° 31´·92N., 70° 51´·44W. Delete depth, 23, enclosed by 3fm contour 42° 31´·49N., 70° 51´·05W.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.