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Sadamisaki Kō Lighthouse

F Green 6s🇯🇵Ikata, JPOperational

Location & Light Range

About Sadamisaki Kō Lighthouse

This 9.5-meter white concrete post lighthouse was constructed in 1963. It rises from a single-story concrete equipment room and is situated at the end of Sadamisaki harbor's main breakwater. The light emits a single green flash every 6 seconds, visible for 11.9 nautical miles. The structure is located on the south side of a peninsula within Ehime Prefecture, approximately 5 km northeast of the cape's point. While visitors can access the site, the tower itself is closed to the public.

Why it matters: The light is essential for vessels entering or leaving Sadamisaki harbor, clearly marking the breakwater's end and aiding navigation in this active port area.

Light & Optic

Characteristic Signature
F Green 6s
Flash Type
Fixed
Light Color
Green
Interval
6s
Raw Code
F.Fl. G 6s
Focal Height
15m
Geographic Range
11.9NM

Construction & History

Year Built
1963

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: A 9.5m white concrete post rises from a square 1-story concrete equipment room.

Location

City
Ikata
Country
🇯🇵Japan
Region
Ehime Prefecture
Sea Region
at the end of the main breakwater of Sadamisaki harbor, on the south side of the peninsula, about 5 km northeast of the point of the cape
Latitude
33.3632°
Longitude
132.0480°

References & Identifiers

Nearest Port
Misaki(3.8 km)
Admiralty No.
M5625.6
NGA No.
10465
USCG No.
JCG-5647
ARLHS No.
JPN519
Wikidata
Q11383359 →
OpenStreetMap
View on OSM →
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Frequently Asked Questions

How do mariners identify Sadamisaki Kō Lighthouse at night?+
Sadamisaki Kō displays the characteristic F Green 6s. 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 Sadamisaki Kō Lighthouse guide vessels into?+
Sadamisaki Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Misaki, Ehime at 3.5 NM to the ENE. Other ports served include Saganoseki (11.3 NM SW), MITSUKE (11.6 NM ENE), Ikata (16.9 NM ENE), Musashi (17.6 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sadamisaki Kō Lighthouse still active and maintained?+
Yes, Sadamisaki 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 Sadamisaki Kō Lighthouse?+
Sadamisaki 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 Sadamisaki Kō Lighthouse?+
You can track vessels near Sadamisaki 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.