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Iduhara Lighthouse

Iso R 4s🇯🇵Tsushima, JPOperational

Location & Light Range

About Iduhara Lighthouse

Iduhara Lighthouse is a maritime navigation aid located in Tsushima, JP. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 13 meters above mean sea level.

Light characteristic: The identifying signal of this lighthouse is Iso R 4s. This means the light produces 1 flash every 4 seconds. Mariners use this distinctive pattern to positively identify the light and distinguish it from other aids to navigation in the area. The light color is red, which may indicate a specific sector or warning zone.

Position: Iduhara Lighthouse is positioned at 34.1914°N, 129.2997°E, near Tsushima in JP.

Geographic context: Iduhara Lighthouse is situated on the Sea of Japan, within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. The location falls within the subtropical climate zone with mild winters and warm summers.

Nearby lighthouses in JP: Other lighthouses in the region include Abashiri East Breakwater, Abashiri Island Breakwater North End, Abashiri North Breakwater, Abashiri South Breakwater East End, Abuka Kō. View all on the Lighthouses Directory.

Nearby Ports

Izuhara

JPIZH

0.4 NMWNW

Hara

JPHAR

0.5 NMN

Se/Izuhara

JPSEQ

0.5 NMN

Koura, Kagawa

JPKOR

1.7 NMN

Kechi

JPKEC

4.3 NMNNE

Flash Characteristics

Characteristic Signature
Iso R 4s
Flash Type
Isophase
Light Color
Red
Flash Count
1 flash
Interval
4s

Physical Specifications

Focal Height
13m
Light Range
Not available
Status
ACTIVE
City
Tsushima
Country
🇯🇵JP
Latitude
34.1914°
Longitude
129.2997°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Iduhara Lighthouse at night?+
Iduhara displays the characteristic Iso R 4s — 1 red 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. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Iduhara Lighthouse guide vessels into?+
Iduhara Lighthouse assists vessels approaching 5 nearby ports. The closest is Izuhara at 0.4 NM to the WNW. Other ports served include Hara (0.5 NM N), Se/Izuhara (0.5 NM N), Koura, Kagawa (1.7 NM N), Kechi (4.3 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Iduhara Lighthouse still active and maintained?+
Yes, Iduhara 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 Iduhara Lighthouse?+
Iduhara 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 Iduhara Lighthouse?+
You can track vessels near Iduhara 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.