SECTOR NORTHERN NEW ENGLAND, SUBMERGED LANDS ACT (SLA) - PORTLAND HARBOR APPROACH
General / Hazards To Navigation / Hazards
Location: 43-37.05N 070-04.38W An unexploded ordnance has been identified at position 43°37'03.180" N, 070°04'22.800" W, in approximately 36 meters of water. Mariners are advised to exercise extreme caution when transiting the vicinity and to refrain from anchoring, bottom trawling, ground fishing, or otherwise disturbing the seabed within the area.
Valid 2026-11-02 to 2027-05-01.
USCG Northeast District Local Notice to Mariners 44/2026