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Yokosuka Northeast Breakwater Lighthouse

Fl Red 3s🇯🇵Yokosuka, JPOperational

Location & Light Range

About Yokosuka Northeast Breakwater Lighthouse

This square concrete tower, standing 18 meters tall, is painted red and is situated on a breakwater protecting Yokosuka harbor from northerly winds. Its structure includes a lantern and gallery, attached to a complex of 1- and 2-story concrete buildings. The lighthouse emits a red light that flashes every three seconds, with a focal plane 20 meters above the water, visible for 13.2 nautical miles. Accessible only by boat, the tower and its site are closed to the public. It marks the eastern extent of a substantial breakwater, much of which lies submerged.

Why it matters: This lighthouse warns vessels of the presence and extent of the submerged breakwater, guiding them safely into Yokosuka harbor, a major naval and commercial port.

Light & Optic

Characteristic Signature
Fl Red 3s
Flash Type
Flashing
Light Color
Red
Interval
3s
Raw Code
Fl R 3s
Focal Height
20m
Geographic Range
13.2NM

Location

City
Yokosuka
Country
🇯🇵Japan
Region
Kanagawa Prefecture
Sea Region
Located on the Yokosuka Northeast Breakwater, which protects the harbor from waves driven down the bay by northerly winds.
Latitude
35.3192°
Longitude
139.6751°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
18m
Tower Shape
square
Tower Color
red
Material
concrete

Structure: square concrete tower with lantern and gallery, painted red, attached to a cluster of 1- and 2-story concrete buildings

References & Identifiers

Nearest Port
Yokosuka(0.8 km)
Admiralty No.
M6372
NGA No.
5132
ARLHS No.
JPN-1345
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Frequently Asked Questions

How do mariners identify Yokosuka Northeast Breakwater Lighthouse at night?+
Yokosuka Northeast Breakwater displays the characteristic Fl Red 3s. 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 Yokosuka Northeast Breakwater Lighthouse guide vessels into?+
Yokosuka Northeast Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Yokosuka at 1.8 NM to the SSE. Other ports served include Hayama (2.2 NM S), Oppama (3.1 NM WSW), Zushi (5 NM WSW), Uraga (5.3 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yokosuka Northeast Breakwater Lighthouse still active and maintained?+
Yes, Yokosuka Northeast 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 Yokosuka Northeast Breakwater Lighthouse?+
Yokosuka Northeast 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 Yokosuka Northeast Breakwater Lighthouse?+
You can track vessels near Yokosuka Northeast 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.