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Omasaki Lighthouse

Fl (3) W 18s🇯🇵Honshu-North Coast, JPOperational

Location & Light Range

About Omasaki Lighthouse

Omasaki Lighthouse is a metal structure standing 82 meters tall on the Honshu-North Coast. Its tower features a distinctive design with white banding against a black background. The light emits three white flashes in a repeating 18-second cycle. This operational lighthouse provides a geographic range of 12 nautical miles.

Light & Optic

Characteristic Signature
Fl (3) W 18s
Flash Type
Flashing
Light Color
White
Flash Count
3 flashes
Interval
18s
Raw Code
Fl.(3)W. period 18s
Focal Height
36m
Light Range
12NM (22.2 km)
Geographic Range
12NM

Location

City
Honshu-North Coast
Country
🇯🇵JP
Latitude
41.5546°
Longitude
140.9115°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
82m
Tower Color
white and black
Material
metal

Structure: Black tower, white banded; 82

References & Identifiers

Admiralty No.
M6634.5
NGA No.
3832
Wikidata
Q8081606 →
OpenStreetMap
View on OSM →
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Frequently Asked Questions

How far offshore can Omasaki Lighthouse be seen?+
With a focal height of 36 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Omasaki is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Omasaki Lighthouse at night?+
Omasaki displays the characteristic Fl (3) W 18s — 3 white flashes every 18 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.
Which ports and harbors does Omasaki Lighthouse guide vessels into?+
Omasaki Lighthouse assists vessels approaching 5 nearby ports. The closest is Oma at 1.5 NM to the S. Other ports served include Sai, Aomori (7.6 NM SSW), Soya (10 NM SSW), Toyoura (13.5 NM NNE), Ohata (14.7 NM SE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Omasaki Lighthouse still active and maintained?+
Yes, Omasaki 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 Omasaki Lighthouse?+
Omasaki 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 Omasaki Lighthouse?+
You can track vessels near Omasaki 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.