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Esaki Lighthouse

F White 5s🇯🇵Hagi, JPOperational

Location & Light Range

About Esaki Lighthouse

Also known as: Esaki (Ezaki) Kō (Ryukin Saki)

The Esaki Lighthouse, established in 1959, consists of a 9-meter cylindrical concrete tower, painted white and red, atop a round, single-story concrete equipment shelter. The light source is situated at an 11-meter focal height and emits a white flash every 5 seconds. Its light can be seen for 10.7 nautical miles. Public access is permitted to the grounds, though the tower interior remains inaccessible. The lighthouse is situated 0.4 kilometers from the port of Esaki.

Why it matters: Operating since 1959, this lighthouse functions as a navigation aid for vessels along the coast of Yamaguchi Prefecture.

Background
Esaki Lighthouse is a lighthouse located in the city of Awaji, Hyōgo Japan. It is located at the northernmost cape of Awaji Island facing the Akashi Strait opposite the city of Kobe. The lighthouse is located within the borders of the Setonaikai National Park. It is registered with the Japanese government as an “A-grade Lighthouse” for historic preservation and is listed as one of the “50 Lighthouses of Japan” by the Japan Lighthouse Association. It is operated by the Japan Coast Guard.

Light & Optic

Characteristic Signature
F White 5s
Flash Type
Fixed
Light Color
White
Interval
5s
Raw Code
F W 5s
Focal Height
11m
Light Range
18NM (33.3 km)
Geographic Range
10.7NM

Construction & History

Year Built
1959

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9m
Tower Shape
cylindrical
Tower Color
white and red
Material
concrete

Structure: round concrete tower with gallery rising from a round 1-story concrete equipment shelter

Location

City
Hagi
Country
🇯🇵Japan
Region
Yamaguchi Prefecture
Latitude
34.6530°
Longitude
131.6458°

References & Identifiers

Nearest Port
Esaki(0.4 km)
Admiralty No.
M7358
NGA No.
1788
ARLHS No.
JPN-1608
Wikipedia
Read on Wikipedia →
Wikidata
Q5396696 →
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Frequently Asked Questions

How far offshore can Esaki Lighthouse be seen?+
With a focal height of 11 meters and a nominal range of 18 nautical miles (approximately 33.3 km), Esaki is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. Lights of this range are typically used as landfall lights by vessels approaching from the open sea.
How do mariners identify Esaki Lighthouse at night?+
Esaki displays the characteristic F White 5s. 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Esaki Lighthouse guide vessels into?+
Esaki Lighthouse assists vessels approaching 5 nearby ports. The closest is Esaki at 0.5 NM to the S. Other ports served include Susa (3.1 NM SW), Masuda, Shimane (9 NM ENE), Misumi, Shimane (16.1 NM ENE), Hagi (17.4 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Esaki Lighthouse still active and maintained?+
Yes, Esaki 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 Esaki Lighthouse?+
Esaki 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 Esaki Lighthouse?+
You can track vessels near Esaki 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.