Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Grand Marais Lighthouse Lighthouse

Fl G 4s🇺🇸Minnesota, USInactive

Location & Light Range

About Grand Marais Lighthouse Lighthouse

Grand Marais Lighthouse Lighthouse is a maritime navigation aid located in Minnesota, US. It is currently listed as inactive and may no longer emit a light signal. The light sits at a focal height of 15 meters above mean sea level.

Light characteristic: The identifying signal of this lighthouse is Fl G 4s. This means the light produces 1 flash every 4 seconds. Mariners use this distinctive pattern to positively identify the light and distinguish it from other aids to navigation in the area. The light color is green, which may indicate a specific sector or warning zone.

Position: Grand Marais Lighthouse Lighthouse is positioned at 47.7451°N, 90.3381°W, near Minnesota in US.

Geographic context: Grand Marais Lighthouse Lighthouse is situated on the North Pacific Ocean. The location falls within the temperate maritime climate zone.

Nearby lighthouses in US: Other lighthouses in the region include Abagadasset Point Range, Absecon, Admiralty Head Light, Ahukini Breakwater, Alameda County (Oakland Area) Lighthouses. View all on the Lighthouses Directory.

Nearby Ports

Taconite Harbor

USTCH

26.9 NMWSW

Grand Portage

USGRA

29 NMENE

Silver Bay

USSIB

46.5 NMSW

Flash Characteristics

Characteristic Signature
Fl G 4s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
4s

Physical Specifications

Focal Height
15m
Light Range
Not available
Status
INACTIVE
City
Minnesota
Country
🇺🇸US
Latitude
47.7451°
Longitude
-90.3381°

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Grand Marais Lighthouse Lighthouse on the live nautical map

Plan voyages near US, see nearby vessels in real time, and explore 7,000+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Grand Marais Lighthouse Lighthouse at night?+
Grand Marais Lighthouse displays the characteristic Fl G 4s — 1 green flash every 4 seconds. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The green color may indicate a specific sector or warning zone.
Which ports and harbors does Grand Marais Lighthouse Lighthouse guide vessels into?+
Grand Marais Lighthouse Lighthouse assists vessels approaching 3 nearby ports. The closest is Taconite Harbor at 26.9 NM to the WSW. Other ports served include Grand Portage (29 NM ENE), Silver Bay (46.5 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Grand Marais Lighthouse Lighthouse still active and maintained?+
Grand Marais Lighthouse Lighthouse is currently listed as inactive. It may have been decommissioned, replaced by a different navigation aid, or temporarily taken out of service. Mariners should check the latest Notices to Mariners for current status.
How can I track vessels near Grand Marais Lighthouse Lighthouse?+
You can track vessels near Grand Marais Lighthouse Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.