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Yokohama Lumber Basin Breakwater Lighthouse

Iso Green 4s🇯🇵Yokohama, JPOperational

Location & Light Range

About Yokohama Lumber Basin Breakwater Lighthouse

Established in 1938, this cylindrical metal post stands 9 meters tall, with its light positioned 10 meters above the water. It marks the outer elbow of a breakwater that protects a lumber basin located west of the Yokohama Harbor Bridge. The structure consists of a white, 9-meter post mounted atop a 1-story equipment shelter. Exhibiting an isophase green light on a 4-second cycle, its geographic range extends to 10.4 nautical miles. This light guides vessels into the basin near Yokohama.

Why it matters: This light is critical for guiding commercial vessels, especially timber carriers, safely into and out of the Yokohama Lumber Basin, precisely marking the breakwater's elbow in a busy industrial port.

Light & Optic

Characteristic Signature
Iso Green 4s
Flash Type
Isophase
Light Color
Green
Interval
4s
Raw Code
Iso G 4s
Focal Height
10m
Geographic Range
10.4NM

Construction & History

Year Built
1938

References & Identifiers

Nearest Port
Yokohama(4.1 km)
Admiralty No.
M6413
NGA No.
5192
USCG No.
JCG-2118

Tower & Structure

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

Structure: A 9m white cylindrical post, mounted on a 1-story equipment shelter.

Location

City
Yokohama
Country
🇯🇵Japan
Region
Kanagawa Prefecture
Sea Region
elbow of a breakwater protecting a basin just west of the Yokohama Harbor Bridge
Latitude
35.4460°
Longitude
139.6609°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Yokohama Lumber Basin Breakwater Lighthouse at night?+
Yokohama Lumber Basin Breakwater displays the characteristic Iso 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 Yokohama Lumber Basin Breakwater Lighthouse guide vessels into?+
Yokohama Lumber Basin Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Yokohama at 2 NM to the S. Other ports served include Asahimachi (5.6 NM NNE), Higashi-Ogishima (6.1 NM ENE), Kawasaki (6.3 NM NE), Tsuzuki Ku (7 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yokohama Lumber Basin Breakwater Lighthouse still active and maintained?+
Yes, Yokohama Lumber Basin 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 Yokohama Lumber Basin Breakwater Lighthouse?+
Yokohama Lumber Basin 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 Yokohama Lumber Basin Breakwater Lighthouse?+
You can track vessels near Yokohama Lumber Basin 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.