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Biwase Hana Lighthouse

Fl Green 3s🇯🇵Hamanaka, JPOperational

Location & Light Range

About Biwase Hana Lighthouse

Also known as: Biwase Hana (Biwase Kō)

This white concrete post structure stands 8.5 meters tall, with its light positioned 12 meters above sea level. It is situated at the eastern end of the detached south breakwater, marking the entrance to Biwase, a fishing port on the south side of the Cape Kiritappu peninsula in Hokkaido Prefecture. The light emits a single green flash every 3 seconds, visible for 11 nautical miles. The operational post rises from a square, single-story concrete equipment shelter. While the site is open to visitors, the tower itself remains closed.

Why it matters: The light is essential for local fishing boats navigating the waters and safely entering the Biwase fishing port, particularly during periods of low visibility or at night.

Light & Optic

Characteristic Signature
Fl Green 3s
Flash Type
Flashing
Light Color
Green
Interval
3s
Raw Code
Fl G 3s
Focal Height
12m
Geographic Range
11NM

Location

City
Hamanaka
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
Located at the east end of the detached south breakwater at Biwase, a fishing port sheltered on the south side of Cape Kiritappu peninsula.
Latitude
43.0503°
Longitude
145.0902°

References & Identifiers

Nearest Port
Akkeshi(11.2 km)
Admiralty No.
M6830.4
NGA No.
0498

Tower & Structure

Tower Height
8.5m
Tower Shape
post
Tower Color
white
Material
concrete

Structure: An 8.5m white concrete post rises from a square 1-story concrete equipment shelter.

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Biwase Hana Lighthouse at night?+
Biwase Hana displays the characteristic Fl Green 3s. 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. The green color may indicate a specific sector or warning zone.
Which ports and harbors does Biwase Hana Lighthouse guide vessels into?+
Biwase Hana Lighthouse assists vessels approaching 5 nearby ports. The closest is Kiritappu at 2.5 NM to the NE. Other ports served include Akkeshi (10.7 NM W), Hanasaki (25.4 NM ENE), Nasa (25.7 NM ENE), Nemuro (27.5 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Biwase Hana Lighthouse still active and maintained?+
Yes, Biwase Hana 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.
How can I track vessels near Biwase Hana Lighthouse?+
You can track vessels near Biwase Hana 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.