Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Sumiyoshi Kō West Breakwater Lighthouse

Fl (2) Red 6s🇯🇵Oita, JPOperational

Location & Light Range

About Sumiyoshi Kō West Breakwater Lighthouse

This 9.5-meter cylindrical concrete lighthouse, painted red, marks the end of the west breakwater in Sumiyoshi harbor, Ōita. It is attached to a square, single-story concrete equipment room. The structure stands 13 meters above sea level, emitting a red light with two flashes every six seconds. Its geographic range extends to 11.3 nautical miles. The site is open to the public, but the tower itself is closed.

Why it matters: This lighthouse is indispensable for the safe navigation of vessels entering and exiting Sumiyoshi harbor, clearly delineating the end of the west breakwater and preventing collisions.

Light & Optic

Characteristic Signature
Fl (2) Red 6s
Flash Type
Flashing
Light Color
Red
Flash Count
2 flashes
Interval
6s
Raw Code
Fl R 6s
Focal Height
13m
Geographic Range
11.3NM

Location

City
Oita
Country
🇯🇵Japan
Region
Oita Prefecture
Sea Region
Sumiyoshi harbor in Ōita, marking the end of its west breakwater.
Latitude
33.2555°
Longitude
131.5975°

References & Identifiers

Nearest Port
Oita(3.2 km)
Admiralty No.
M4948.6
NGA No.
9384
ARLHS No.
JPN-2334

Tower & Structure

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

Structure: A 9.5m cylindrical concrete post, painted red, attached to a square 1-story concrete equipment room.

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Sumiyoshi Kō West Breakwater Lighthouse on the live nautical map

Plan voyages near Japan, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Sumiyoshi Kō West Breakwater Lighthouse at night?+
Sumiyoshi Kō West Breakwater displays the characteristic Fl (2) Red 6s — 2 red flashes every 6 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 Sumiyoshi Kō West Breakwater Lighthouse guide vessels into?+
Sumiyoshi Kō West Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Oita at 3.5 NM to the E. Other ports served include Beppushinko (5.5 NM NW), Beppu, Oita (5.5 NM NW), Hiji (5.5 NM NW), Kitsuki (9.7 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sumiyoshi Kō West Breakwater Lighthouse still active and maintained?+
Yes, Sumiyoshi Kō West Breakwater 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 Sumiyoshi Kō West Breakwater Lighthouse?+
Sumiyoshi Kō West Breakwater 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 Sumiyoshi Kō West Breakwater Lighthouse?+
You can track vessels near Sumiyoshi Kō West Breakwater 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.