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Hatomashima Lighthouse

Fl W 4s🇯🇵Nansei Shoto, JPInactive

Location & Light Range

About Hatomashima Lighthouse

The Hatomashima Lighthouse is a square tower constructed from green fiberglass. It stands 47 meters above sea level. The structure includes a topmark and is built on a pile. It emits a white flash every 4 seconds. The lighthouse has a geographic range of 12 nautical miles.

Light & Optic

Characteristic Signature
Fl W 4s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
4s
Raw Code
Fl.W. period 4s
Focal Height
47m
Light Range
12NM (22.2 km)
Geographic Range
12NM

Location

City
Nansei Shoto
Country
🇯🇵JP
Latitude
24.4731°
Longitude
123.8189°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Shape
square
Tower Color
green
Material
fiberglass

Structure: PORT (IALA B) Green glass reinforced plastic(grp) fiberglass tower, topmark, on pile

References & Identifiers

Admiralty No.
M4730
NGA No.
13560
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Frequently Asked Questions

How far offshore can Hatomashima Lighthouse be seen?+
With a focal height of 47 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Hatomashima 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 Hatomashima Lighthouse at night?+
Hatomashima displays the characteristic Fl W 4s — 1 white 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.
Which ports and harbors does Hatomashima Lighthouse guide vessels into?+
Hatomashima Lighthouse assists vessels approaching 5 nearby ports. The closest is Hatoma at 2.9 NM to the W. Other ports served include Funaura (4 NM S), Kohama (12.3 NM SE), Ishigaki (20.1 NM ESE), Kubura (48 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hatomashima Lighthouse still active and maintained?+
Hatomashima 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 Hatomashima Lighthouse?+
You can track vessels near Hatomashima 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.