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Sunasaki Lighthouse

Fl W 4s🇯🇵Hokkaido-South Coast, JPOperational

Location & Light Range

About Sunasaki Lighthouse

Sunasaki is an operational lighthouse situated along the Hokkaido-South Coast. It emits a white light from a focal height of 14 meters. The tower's presence aids navigation in this coastal region.

Light & Optic

Characteristic Signature
Fl W 4s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
4s
Focal Height
14m
Light Range
12NM (22.2 km)

Nearby Vessels

Flag
Type
Name
Dist.

Location

City
Hokkaido-South Coast
Country
🇯🇵JP
Latitude
42.1369°
Longitude
140.7119°
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Frequently Asked Questions

How far offshore can Sunasaki Lighthouse be seen?+
With a focal height of 14 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Sunasaki 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 Sunasaki Lighthouse at night?+
Sunasaki 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 Sunasaki Lighthouse guide vessels into?+
Sunasaki Lighthouse assists vessels approaching 5 nearby ports. The closest is Moriage at 5.9 NM to the WSW. Other ports served include Morinohama (5.9 NM WSW), Ogomori (5.9 NM WSW), Usujiri (16 NM SE), Muroran (16.8 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sunasaki Lighthouse still active and maintained?+
Yes, Sunasaki 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 Sunasaki Lighthouse?+
You can track vessels near Sunasaki 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.