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Jodan Lighthouse

Mo 10s🇯🇵Kesennuma, JPOperational

Location & Light Range

About Jodan Lighthouse

Also known as: Jodan (Sannohama)

Established in 1957, the Jodan lighthouse served the entrance to Kesennuma harbor. It stood on a promontory at Sannohama, marking the east side of the harbor approach. The structure consisted of a 6-meter white concrete post atop a square, 1-story concrete equipment shelter. With a focal height of 9 meters, it offered a geographic range of 30 nautical miles. The light displayed a group flashing white and green signal. The lighthouse was deactivated and removed in 2022.

Why it matters: The Jodan lighthouse guided vessels into Kesennuma harbor, a port important for fishing and local trade, by marking the eastern approach to the harbor entrance.

Light & Optic

Characteristic Signature
Mo 10s
Flash Type
Morse
Interval
10s
Raw Code
Mo.(GB)R
Focal Height
9m
Geographic Range
30NM

Construction & History

Year Built
1957

Significant events: Inactive since 2022, removed

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
6m
Tower Color
white
Material
concrete

Structure: A 6m concrete post attached to a square 1-story concrete equipment shelter, painted white.

Location

City
Kesennuma
Country
🇯🇵Japan
Region
Miyagi Prefecture
Sea Region
Promontory at Sannohama, east side of the entrance to Kesennuma harbor
Latitude
38.8790°
Longitude
141.6064°

References & Identifiers

Nearest Port
Kesennuma(1.8 km)
Admiralty No.
M6566.5
NGA No.
4256
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Frequently Asked Questions

How do mariners identify Jodan Lighthouse at night?+
Jodan displays the characteristic Mo 10s. 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 Jodan Lighthouse guide vessels into?+
Jodan Lighthouse assists vessels approaching 5 nearby ports. The closest is En at 0.8 NM to the SSW. Other ports served include Nakayama (0.8 NM SSW), Obatake (0.8 NM SSW), Saba (0.8 NM SSW), Kesennuma (1.4 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Jodan Lighthouse still active and maintained?+
Yes, Jodan 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 Jodan Lighthouse?+
Jodan 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 Jodan Lighthouse?+
You can track vessels near Jodan 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.