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Tōkyō East Passage (Tōkyō Gate) West Breakwater Lighthouse

Iso Red 4s🇯🇵Koto, JPOperational

Location & Light Range

About Tōkyō East Passage (Tōkyō Gate) West Breakwater Lighthouse

A round, white concrete tower, 16 meters in height, was completed in 1976. This structure, housing a lantern and gallery, has its light set 3 meters above sea level. It projects an isophase red light that flashes every 4 seconds, visible for 1 nautical mile. Situated in Koto, the lighthouse is 4.1 kilometers from Tokyo's port.

Why it matters: This lighthouse defined the western edge of the Tōkyō Gate, a primary waterway for ships entering and leaving Tokyo Bay, a major global shipping hub.

Light & Optic

Characteristic Signature
Iso Red 4s
Flash Type
Isophase
Light Color
Red
Interval
4s
Raw Code
Iso R 4s
Focal Height
3m
Light Range
12NM (22.2 km)
Geographic Range
1NM

Construction & History

Year Built
1976

References & Identifiers

Nearest Port
Tokyo(4.1 km)
Admiralty No.
M6427.4
NGA No.
5276
ARLHS No.
JPN-1473

Tower & Structure

Tower Height
16m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round white concrete tower with lantern and gallery

Location

City
Koto
Country
🇯🇵Japan
Sea Region
Tōkyō East Passage (Tōkyō Gate) West Breakwater, Japan
Latitude
35.6100°
Longitude
139.8244°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Tōkyō East Passage (Tōkyō Gate) West Breakwater Lighthouse be seen?+
With a focal height of 3 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Tōkyō East Passage (Tōkyō Gate) West Breakwater is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Tōkyō East Passage (Tōkyō Gate) West Breakwater Lighthouse at night?+
Tōkyō East Passage (Tōkyō Gate) West Breakwater displays the characteristic Iso Red 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Tōkyō East Passage (Tōkyō Gate) West Breakwater Lighthouse guide vessels into?+
Tōkyō East Passage (Tōkyō Gate) West Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Tokyo at 0.2 NM to the NE. Other ports served include Aomi (2 NM WNW), Ariake, Tokyo (2.4 NM NW), Urayasu (4.3 NM E), Shibaura (5 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tōkyō East Passage (Tōkyō Gate) West Breakwater Lighthouse still active and maintained?+
Yes, Tōkyō East Passage (Tōkyō Gate) 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 Tōkyō East Passage (Tōkyō Gate) West Breakwater Lighthouse?+
Tōkyō East Passage (Tōkyō Gate) 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 Tōkyō East Passage (Tōkyō Gate) West Breakwater Lighthouse?+
You can track vessels near Tōkyō East Passage (Tōkyō Gate) 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.