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Setsume Lighthouse

Iso W 6s🇯🇵Nagasaki Area, JPOperational

Location & Light Range

About Setsume Lighthouse

This metal lighthouse stands 7 meters tall in the Nagasaki Area. The structure features a white bollard topped with a green tower. Its focal height reaches 13 meters. The light emits an isophase white signal on a 6-second cycle. This aid has a geographic range of 5 nautical miles.

Light & Optic

Characteristic Signature
Iso W 6s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Iso.W. period 6s
Focal Height
13m
Geographic Range
5NM

Location

City
Nagasaki Area
Country
🇯🇵JP
Latitude
32.5907°
Longitude
130.1675°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
7m
Tower Color
white and green
Material
metal

Structure: Green structure, on white bollard; 7

References & Identifiers

Admiralty No.
M5187.3
NGA No.
11728
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Frequently Asked Questions

How do mariners identify Setsume Lighthouse at night?+
Setsume displays the characteristic Iso W 6s — 1 white flash every 6 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 Setsume Lighthouse guide vessels into?+
Setsume Lighthouse assists vessels approaching 5 nearby ports. The closest is Kuchinotsu at 1.6 NM to the NE. Other ports served include Oniike (2.8 NM SSE), Futae (3.3 NM SW), Mogine (7.2 NM SSE), Tomioka, Kumamoto (7.8 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Setsume Lighthouse still active and maintained?+
Yes, Setsume 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 Setsume Lighthouse?+
Setsume 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 Setsume Lighthouse?+
You can track vessels near Setsume 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.