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Yawatahama Kō Lighthouse

Oc Green 4s🇯🇵Yawatahama, JPOperational

Location & Light Range

About Yawatahama Kō Lighthouse

This 8.5-meter white concrete post stands at the end of a breakwater, marking the northern entrance to Yawatahama harbor. The post rises from a square, single-story concrete equipment shelter. Its light displays an occulting green signal, with a flash every 4 seconds, visible for 10.7 nautical miles. The structure is located within the Yawatahama port area, about 0.3 kilometers from the city center. The site is open to the public, but the tower itself is closed. This navigational aid has served for many years, guiding vessels into the harbor.

Why it matters: Yawatahama Kō is essential for the safe navigation of maritime traffic entering and exiting Yawatahama harbor, a key regional port. Its specific light marking guides vessels clear of the breakwater into protected waters.

Light & Optic

Characteristic Signature
Oc Green 4s
Flash Type
Occulting
Light Color
Green
Interval
4s
Raw Code
Oc G 4s
Focal Height
11m
Geographic Range
10.7NM

Location

City
Yawatahama
Country
🇯🇵Japan
Region
Ehime Prefecture
Sea Region
Yawatahama harbor, marking the entrance on the north side of a breakwater.
Latitude
33.4561°
Longitude
132.4064°

References & Identifiers

Nearest Port
Yawatahama(0.3 km)
Admiralty No.
M5623.5
NGA No.
10378
ARLHS No.
JPN-2429

Tower & Structure

Tower Height
8.5m
Tower Shape
post
Tower Color
white
Material
concrete

Structure: An 8.5m white concrete post rising from a square 1-story concrete equipment shelter.

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Yawatahama Kō Lighthouse at night?+
Yawatahama Kō displays the characteristic Oc Green 4s. 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Yawatahama Kō Lighthouse guide vessels into?+
Yawatahama Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Yawatahama at 0.4 NM to the E. Other ports served include Mikame (0.6 NM SE), Kawanoishi (1.2 NM NW), Ikata (3.1 NM WNW), MITSUKE (7.9 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yawatahama Kō Lighthouse still active and maintained?+
Yes, Yawatahama Kō 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 Yawatahama Kō Lighthouse?+
Yawatahama Kō 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 Yawatahama Kō Lighthouse?+
You can track vessels near Yawatahama Kō 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.