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Shiritosho Lighthouse

Q W 15s🇯🇵Hokkaido-South Coast, JPInactive

Location & Light Range

About Shiritosho Lighthouse

Shiritosho lighthouse is situated on the Hokkaido-South Coast. It has a focal height of 15 meters. The light emitted is white.

Light & Optic

Characteristic Signature
Q W 15s
Flash Type
Quick
Light Color
White
Flash Count
1 flash
Interval
15s
Focal Height
15m
Light Range
5NM (9.3 km)

Nearby Vessels

Flag
Type
Name
Dist.

Location

City
Hokkaido-South Coast
Country
🇯🇵JP
Latitude
42.9611°
Longitude
144.3689°
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Frequently Asked Questions

How far offshore can Shiritosho Lighthouse be seen?+
With a focal height of 15 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Shiritosho 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 Shiritosho Lighthouse at night?+
Shiritosho displays the characteristic Q W 15s — 1 white flash every 15 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 Shiritosho Lighthouse guide vessels into?+
Shiritosho Lighthouse assists vessels approaching 4 nearby ports. The closest is Shiro at 1.3 NM to the N. Other ports served include Kushiro (1.6 NM NNW), Akkeshi (21.6 NM ENE), Kiritappu (34.1 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Shiritosho Lighthouse still active and maintained?+
Shiritosho 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 Shiritosho Lighthouse?+
You can track vessels near Shiritosho 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.