Coast Guard Seals Off Underwater Demo of Offshore LNG Port Near Boston
Published Date: 9/23/2026
Proposed Rule
Summary
The Coast Guard wants to create a temporary safety zone in Massachusetts Bay, 22 miles northeast of Boston, to keep people and boats safe during underwater demolition work. This means no one can enter the area without special permission while the Neptune LNG Deepwater Port is being taken apart. If you want to share your thoughts, you have until October 23, 2026, to comment—no costs for the public, just safety first!
Analyzed Economic Effects
2 provisions identified: 1 benefits, 1 costs, 0 mixed.
500‑Meter Safety Zone in Massachusetts Bay
You may not enter the safety zone that covers all navigable waters within a 500‑meter radius of position 42°28'52.1" N, 70°46'16.9" W (about 22 miles northeast of Boston) from 11:59 p.m. February 28, 2027 through 8 a.m. September 30, 2027 unless the Captain of the Port (COTP) or a designated representative specifically authorizes you. The zone supports subsea demolition and decommissioning of the Neptune LNG deepwater port and will include heavy contractor vessels (including a 140‑meter construction vessel), tugs, barges, underwater remotely operated vehicles, and divers.
Permission Process and Small‑Entity Certification
Vessels may request permission to enter the safety zone by contacting the Captain of the Port or a designated representative on VHF‑FM channel 16 or by telephone at (833) 449‑0539; those granted permission must follow all lawful orders. The Coast Guard certified the proposed rule would not have a significant economic impact on a substantial number of small entities and stated vessel traffic will be able to safely transit around the regulated area.
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Key Dates
Department and Agencies
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