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Tsubushisho Lighthouse

Fl (2) Red 8s🇯🇵Okayama, JPOperational

Location & Light Range

About Tsubushisho Lighthouse

Also known as: Tsubushisho (Tubusi Syo)

Completed in 1958, the Tsubushisho Lighthouse is a cylindrical concrete tower painted red. It stands 11 meters tall on a round concrete pier, located on a shoal within Okayama harbor. The lighthouse emits two red flashes every 8 seconds, with a geographic range of 10.7 nautical miles. It was built to mark the submerged hazard it occupies, guiding vessels in the busy shipping lanes of the port. The structure is mounted on a pier and features a gallery.

Why it matters: This lighthouse is essential for maritime safety in Okayama harbor, warning ships about the shoal it marks and guiding traffic through the busy port.

Light & Optic

Characteristic Signature
Fl (2) Red 8s
Flash Type
Flashing
Light Color
Red
Flash Count
2 flashes
Interval
8s
Raw Code
Fl(2) R 8s
Focal Height
11m
Geographic Range
10.7NM

Construction & History

Year Built
1958

References & Identifiers

Nearest Port
Okayama(3.1 km)
Admiralty No.
M5751
NGA No.
8052
USCG No.
JCG-4012

Tower & Structure

Tower Height
11m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round concrete tower with gallery, mounted on a round concrete pier

Location

City
Okayama
Country
🇯🇵Japan
Region
Okayama Prefecture
Sea Region
on a shoal in Okayama harbor
Latitude
34.6016°
Longitude
134.0138°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Tsubushisho Lighthouse at night?+
Tsubushisho displays the characteristic Fl (2) Red 8s — 2 red flashes every 8 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 Tsubushisho Lighthouse guide vessels into?+
Tsubushisho Lighthouse assists vessels approaching 5 nearby ports. The closest is Okayama at 3.1 NM to the W. Other ports served include Yamada (3.2 NM S), Ieura (7 NM SSE), Ushimado (7 NM E), Uno (7.2 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tsubushisho Lighthouse still active and maintained?+
Yes, Tsubushisho 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 Tsubushisho Lighthouse?+
Tsubushisho 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 Tsubushisho Lighthouse?+
You can track vessels near Tsubushisho 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.