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Kō Saki Lighthouse

Fl W 15s🇯🇵Tsushima, JPOperational

Location & Light Range

About Kō Saki Lighthouse

Kō Saki Lighthouse emits a white light characterized by two white flashes in a 6-second cycle. The light source is positioned 61 meters above sea level. This navigational aid is located in Tsushima.

Why it matters: The lighthouse provides a 12-nautical-mile geographic range.

Light & Optic

Characteristic Signature
Fl W 15s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
15s
Raw Code
Fl.(2)W. period 6s
Focal Height
61m
Geographic Range
12NM

References & Identifiers

Admiralty No.
M5042
NGA No.
12580

Location

City
Tsushima
Country
🇯🇵JP
Latitude
34.0845°
Longitude
129.2139°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Kō Saki Lighthouse at night?+
Kō Saki displays the characteristic Fl W 15s — 1 white flash every 15 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 Kō Saki Lighthouse guide vessels into?+
Kō Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Tsutsu at 2.4 NM to the NW. Other ports served include Kunehama (5.4 NM NNW), Izuhara (7.6 NM NNE), Hara (8.1 NM NNE), Se/Izuhara (8.1 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kō Saki Lighthouse still active and maintained?+
Yes, Kō Saki 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 Kō Saki Lighthouse?+
Kō Saki 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 Kō Saki Lighthouse?+
You can track vessels near Kō Saki 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.