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Mitamaiwa Lighthouse

Mo R 8s🇯🇵Seto Naikai Eastern, JPInactive

Location & Light Range

About Mitamaiwa Lighthouse

Mitamaiwa lighthouse stands 10 meters above sea level. Its light emits a red hue, displaying a Morse code A pattern every 8 seconds. Originally visible for 7 nautical miles, the structure is no longer operational. The lighthouse is situated in the Seto Naikai Eastern region.

Light & Optic

Characteristic Signature
Mo R 8s
Flash Type
Morse
Light Color
Red
Flash Count
1 flash
Interval
8s
Raw Code
Mo.(A)R. period 8s
Focal Height
10m
Light Range
7NM (13.0 km)
Geographic Range
7NM

References & Identifiers

Admiralty No.
M5509
NGA No.
8364

Location

City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.2481°
Longitude
133.6726°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Mitamaiwa Lighthouse be seen?+
With a focal height of 10 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Mitamaiwa is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Mitamaiwa Lighthouse at night?+
Mitamaiwa displays the characteristic Mo R 8s — 1 red flash 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 Mitamaiwa Lighthouse guide vessels into?+
Mitamaiwa Lighthouse assists vessels approaching 5 nearby ports. The closest is Takuma at 1.1 NM to the S. Other ports served include Awashima (2.2 NM WNW), Nio (3.3 NM SSW), Ohama, Ehime (3.4 NM WSW), Tadotsu (3.9 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Mitamaiwa Lighthouse still active and maintained?+
Mitamaiwa Lighthouse is currently listed as inactive. It may have been decommissioned, replaced by a different navigation aid, or temporarily taken out of service. Mariners should check the latest Notices to Mariners for current status.
What shipping routes pass near Mitamaiwa Lighthouse?+
Mitamaiwa 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 Mitamaiwa Lighthouse?+
You can track vessels near Mitamaiwa 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.