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Toshima Lighthouse

Fl W 6s🇯🇵Nanpo-Shoto, JPOperational

Location & Light Range

About Toshima Lighthouse

Toshima Lighthouse is an operational aid to navigation located in Nanpo-Shoto. It emits a single white flash every 6 seconds. The light is visible for 19 nautical miles. The focal height of the light is 66 meters above sea level.

Light & Optic

Characteristic Signature
Fl W 6s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Fl.W. period 6s
Focal Height
66m
Light Range
20NM (37.0 km)
Geographic Range
19NM

References & Identifiers

Admiralty No.
M6273.5
NGA No.
5552

Location

City
Nanpo-Shoto
Country
🇯🇵JP
Latitude
34.5308°
Longitude
139.2767°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Toshima Lighthouse be seen?+
With a focal height of 66 meters and a nominal range of 20 nautical miles (approximately 37.0 km), Toshima is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. Lights of this range are typically used as landfall lights by vessels approaching from the open sea.
How do mariners identify Toshima Lighthouse at night?+
Toshima displays the characteristic Fl W 6s — 1 white flash every 6 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 Toshima Lighthouse guide vessels into?+
Toshima Lighthouse assists vessels approaching 5 nearby ports. The closest is Toshima/Tokyo at 1 NM to the SSW. Other ports served include Okada (16.5 NM NNE), Nishitokyo (17.6 NM NE), Shimoda, Shizuoka (17.9 NM WNW), Inatori (18.5 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Toshima Lighthouse still active and maintained?+
Yes, Toshima 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 Toshima Lighthouse?+
Toshima 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 Toshima Lighthouse?+
You can track vessels near Toshima 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.