UNITED STATES

Coast Guard Sector Northern Great Lakes

Last verified:

EMERGENCY
Call 911
Call 911. Second 24-hour line: (906) 635-3319. On the radio: MAYDAY on VHF 16 · DSC 70.

Area

Lake Superior (incl. MSU Duluth area), St. Marys River, Straits of Mackinac, northern Lake Michigan and northern Lake Huron (north of 44.72N). Formerly 'Sector Sault Sainte Marie'. See it on the rescue map →

Source

uscgboating.org · authority’s own page · checked 2026-10-10
USCG Boater’s Guide to the Federal Requirements for Recreational Boats (rev. Nov 2023) — “call 911 or the U.S. Coast Guard on Channel 16”

Frequently asked

What is the phone number of Coast Guard Sector Northern Great Lakes?

Call 911. Second 24-hour line: (906) 635-3319.

Which waters does Coast Guard Sector Northern Great Lakes cover?

Lake Superior (incl. MSU Duluth area), St. Marys River, Straits of Mackinac, northern Lake Michigan and northern Lake Huron (north of 44.72N). Formerly 'Sector Sault Sainte Marie'. The VesselSOS app picks the responsible centre from your GPS position.

Neighbouring rescue centres

Coast Guard Sector Detroit 257 nmCoast Guard Sector Lake Michigan 259 nmCoast Guard Sector Eastern Great Lakes 319 nmJRCC Trenton 321 nmMRSC Québec 541 nmCoast Guard Sector Maryland-National Capital Region 556 nm

United States: all rescue numbers → Print an emergency card →

VesselSOS is not a rescue service. This page repeats the number the authority publishes; numbers change — see the change log. Are you this centre? How we publish your number.