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Honjō Lighthouse

Iso G 4s🇯🇵Northern Honshū, JPOperational

Location & Light Range

About Honjō Lighthouse

This white metal framework mast tower stands 66 meters high in Northern Honshū. Its focal plane is 14 meters above sea level. The light emits a single green flash every 3 seconds and has a geographic range of 7 nautical miles. The structure was temporarily extinguished in 2013.

Light & Optic

Characteristic Signature
Iso G 4s
Flash Type
Isophase
Light Color
Green
Flash Count
1 flash
Interval
4s
Raw Code
Fl.G. period 3s
Focal Height
14m
Geographic Range
7NM

Location

City
Northern Honshū
Country
🇯🇵JP
Latitude
39.3912°
Longitude
140.0096°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
66m
Tower Shape
mast
Tower Color
white
Material
metal

Structure: White metal framework tower; 66. Temporarily extinguinshed (2013)

References & Identifiers

Admiralty No.
M7069.6
NGA No.
3540
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Frequently Asked Questions

How do mariners identify Honjō Lighthouse at night?+
Honjō displays the characteristic Iso 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 Honjō Lighthouse guide vessels into?+
Honjō Lighthouse assists vessels approaching 5 nearby ports. The closest is Nikaho at 0.6 NM to the E. Other ports served include Hirasawa (6.3 NM SSW), Konoura (9.4 NM SSW), Kisakata (12.6 NM SSW), Akita (22.1 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Honjō Lighthouse still active and maintained?+
Yes, Honjō Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.
What shipping routes pass near Honjō Lighthouse?+
Honjō Lighthouse is located within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Honjō Lighthouse?+
You can track vessels near Honjō 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.