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Hamanabuto Kō Lighthouse

Fl W 5s🇯🇵Eastern Honshū (Ibaraki and Chiba), JPOperational

Location & Light Range

About Hamanabuto Kō Lighthouse

Hamanabuto Kō is a lighthouse situated on Eastern Honshū, between Ibaraki and Chiba prefectures. It features a white cylindrical tower that stands 12 meters high, with the light also at a focal height of 12 meters. Adjacent to the tower is a white dwelling. The lighthouse emits a single white flash at regular intervals. Its geographic range extends to 15 nautical miles.

Light & Optic

Characteristic Signature
Fl W 5s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
5s
Raw Code
FFl
Focal Height
12m
Light Range
5NM (9.3 km)
Geographic Range
15NM

Location

City
Eastern Honshū (Ibaraki and Chiba)
Country
🇯🇵JP
Latitude
35.0765°
Longitude
140.1022°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
12m
Tower Shape
cylindrical
Tower Color
white

Structure: White cylindrical tower, white dwelling; 39

References & Identifiers

Admiralty No.
M6465.4
NGA No.
4892
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Frequently Asked Questions

How far offshore can Hamanabuto Kō Lighthouse be seen?+
With a focal height of 12 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Hamanabuto Kō is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Hamanabuto Kō Lighthouse at night?+
Hamanabuto Kō displays the characteristic Fl W 5s — 1 white flash every 5 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 Hamanabuto Kō Lighthouse guide vessels into?+
Hamanabuto Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Abuto at 0 NM to the NW. Other ports served include Wada (5 NM WSW), Okitsu, Chiba (8 NM ENE), Wakura (11.9 NM ENE), Tateyama (13 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hamanabuto Kō Lighthouse still active and maintained?+
Yes, Hamanabuto Kō 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 Hamanabuto Kō Lighthouse?+
Hamanabuto Kō 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 Hamanabuto Kō Lighthouse?+
You can track vessels near Hamanabuto Kō 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.