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

Kazusa Toyohama Kō Lighthouse

Oc Green 4s🇯🇵Katsuura, JPOperational

Location & Light Range

About Kazusa Toyohama Kō Lighthouse

Established in 1981, this concrete lighthouse guides vessels entering Kazusa Toyohama Kō. The cylindrical, white structure stands 9 meters tall on the end of the breakwater, extending seaward from the northeast side of Katsuura. Its light, positioned 12 meters above sea level, emits an occulting green signal, meaning the light is visible for a period and then obscured for a period, cycling every 4 seconds. The lighthouse offers a geographic range of 11 nautical miles. It is located 1.3 kilometers from the nearest port.

Why it matters: The light's green signal specifically marks the end of the breakwater, assisting local fishing boats and other vessels in safely navigating the approach to Toyohama port.

Light & Optic

Characteristic Signature
Oc Green 4s
Flash Type
Occulting
Light Color
Green
Interval
4s
Raw Code
Oc G 4s
Focal Height
12m
Geographic Range
11NM

Construction & History

Year Built
1981

References & Identifiers

Nearest Port
Katsuura, Chiba(1.3 km)
ARLHS No.
JPN-1321

Tower & Structure

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

Structure: round conical concrete tower with two galleries

Location

City
Katsuura
Country
🇯🇵Japan
Region
Chiba Prefecture
Sea Region
Located at the end of the breakwater of Kazuea Toyohama, on the northeast side of Katsuura.
Latitude
35.1547°
Longitude
140.3319°

Nearby Vessels

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

Find Kazusa Toyohama Kō 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 Kazusa Toyohama Kō Lighthouse at night?+
Kazusa Toyohama 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 Kazusa Toyohama Kō Lighthouse guide vessels into?+
Kazusa Toyohama Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Wakura at 0.4 NM to the SW. Other ports served include Okitsu, Chiba (4.2 NM WSW), Abuto (12.2 NM WSW), Wada (17.2 NM WSW), Kazusaminato (23.2 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kazusa Toyohama Kō Lighthouse still active and maintained?+
Yes, Kazusa Toyohama 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 Kazusa Toyohama Kō Lighthouse?+
Kazusa Toyohama 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 Kazusa Toyohama Kō Lighthouse?+
You can track vessels near Kazusa Toyohama 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.