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Ishi Saki Lighthouse

Fl WR 20s🇯🇵Rishiri and Rebun, Hokkaido, JPOperational

Location & Light Range

About Ishi Saki Lighthouse

This mast lighthouse, built of concrete, stands 8 meters tall and features alternating bands of white and red. Its light emits from a focal height of 35 meters, providing a geographic range of 16 nautical miles. The operational period for this structure is seasonal. It is located within the Rishiri and Rebun area of Hokkaido.

Light & Optic

Characteristic Signature
Fl WR 20s
Flash Type
Flashing
Light Color
WR
Flash Count
1 flash
Interval
20s
Raw Code
Al.Fl
Focal Height
35m
Geographic Range
16NM

Location

City
Rishiri and Rebun, Hokkaido
Country
🇯🇵JP
Latitude
45.1504°
Longitude
141.3285°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
8m
Tower Shape
mast
Tower Color
white;red
Material
concrete

Structure: Mast; 8. Seasonal

References & Identifiers

Admiralty No.
M6928
NGA No.
1380
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Frequently Asked Questions

How do mariners identify Ishi Saki Lighthouse at night?+
Ishi Saki displays the characteristic Fl WR 20s — 1 wr flash every 20 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. The wr color may indicate a specific sector or warning zone.
Which ports and harbors does Ishi Saki Lighthouse guide vessels into?+
Ishi Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Oniwaki at 1.1 NM to the SW. Other ports served include Iwaki (1.3 NM SW), Oshidomari (6.9 NM NW), Shido (6.9 NM NW), Kutsugata (8.5 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ishi Saki Lighthouse still active and maintained?+
Yes, Ishi Saki 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 Ishi Saki Lighthouse?+
You can track vessels near Ishi Saki 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.