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Hayama Kō Lighthouse

Iso R 4s🇯🇵Tōkyō Area, JPOperational

Location & Light Range

About Hayama Kō Lighthouse

This lighthouse features a red tower standing 13 meters high. Its focal plane reaches 10 meters above sea level. The light emitted is red, displaying an isophase characteristic. This means a light and dark period of equal duration repeats on a cycle.

Light & Optic

Characteristic Signature
Iso R 4s
Flash Type
Isophase
Light Color
Red
Flash Count
1 flash
Interval
4s
Raw Code
Iso
Focal Height
10m
Geographic Range
10NM

Location

City
Tōkyō Area
Country
🇯🇵JP
Latitude
35.2846°
Longitude
139.5649°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
13m
Tower Color
red

References & Identifiers

OpenStreetMap
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Frequently Asked Questions

How do mariners identify Hayama Kō Lighthouse at night?+
Hayama Kō displays the characteristic Iso R 4s — 1 red flash every 4 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 Hayama Kō Lighthouse guide vessels into?+
Hayama Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Zushi at 0.9 NM to the E. Other ports served include Oppama (2.7 NM ENE), Shonan (4 NM WNW), Hayama (5 NM E), Yokosuka (6.1 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hayama Kō Lighthouse still active and maintained?+
Yes, Hayama 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 Hayama Kō Lighthouse?+
Hayama 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 Hayama Kō Lighthouse?+
You can track vessels near Hayama 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.