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Sedakasaki Lighthouse

Fl W 10s🇯🇵Nansei Shoto, JPInactive

Location & Light Range

About Sedakasaki Lighthouse

Also known as: Sedakasaki Lighthouse

This white concrete tower stands 15 meters tall and has a square, latticed design. Its focal height reaches 87 meters above sea level, providing a geographic range of 24 nautical miles. The light emits a single white flash every 10 seconds and is displayed for 24 hours daily. A radar reflector is also fitted to the structure. It is situated in the Nansei Shoto region.

Light & Optic

Characteristic Signature
Fl W 10s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
10s
Raw Code
Fl.W. period 10s
Focal Height
87m
Light Range
24NM (44.4 km)
Geographic Range
24NM

Location

City
Nansei Shoto
Country
🇯🇵JP
Latitude
26.7493°
Longitude
128.3239°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
15m
Tower Shape
square
Tower Color
white
Material
concrete

Structure: White square latticed tower. Shown 24 hours. Radar reflector

References & Identifiers

Admiralty No.
M4762.9
NGA No.
13268
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Frequently Asked Questions

How far offshore can Sedakasaki Lighthouse be seen?+
With a focal height of 87 meters and a nominal range of 24 nautical miles (approximately 44.4 km), Sedakasaki is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. Lights of this range are typically used as landfall lights by vessels approaching from the open sea.
How do mariners identify Sedakasaki Lighthouse at night?+
Sedakasaki displays the characteristic Fl W 10s — 1 white flash every 10 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.
Which ports and harbors does Sedakasaki Lighthouse guide vessels into?+
Sedakasaki Lighthouse assists vessels approaching 5 nearby ports. The closest is Kouri at 16.7 NM to the W. Other ports served include Unten (17.6 NM WSW), Nago (21.6 NM WSW), Kada (22.6 NM WNW), Nakada (22.6 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sedakasaki Lighthouse still active and maintained?+
Sedakasaki 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.
How can I track vessels near Sedakasaki Lighthouse?+
You can track vessels near Sedakasaki 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.