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Tosa-nagasakihana Lighthouse

Fl (2) W 6s🇯🇵Shikoku-South coast, JPOperational

Location & Light Range

About Tosa-nagasakihana Lighthouse

This concrete lighthouse stands 31 meters high on Shikoku's south coast. Its round, white tower is visible for 7 nautical miles. The light emits two white flashes within a 6-second cycle. The focal height of the light is 70 meters above sea level.

Light & Optic

Characteristic Signature
Fl (2) W 6s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
6s
Raw Code
Fl.(2)W. period 6s
Focal Height
70m
Light Range
7NM (13.0 km)
Geographic Range
7NM

Location

City
Shikoku-South coast
Country
🇯🇵JP
Latitude
32.8955°
Longitude
132.7052°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
31m
Tower Shape
round
Tower Color
white
Material
concrete

Structure: White round concrete tower; 31

References & Identifiers

Admiralty No.
M5610.4
NGA No.
10516
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Frequently Asked Questions

How far offshore can Tosa-nagasakihana Lighthouse be seen?+
With a focal height of 70 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Tosa-nagasakihana 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 Tosa-nagasakihana Lighthouse at night?+
Tosa-nagasakihana displays the characteristic Fl (2) W 6s — 2 white flashes 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 Tosa-nagasakihana Lighthouse guide vessels into?+
Tosa-nagasakihana Lighthouse assists vessels approaching 5 nearby ports. The closest is Ozuku at 0.9 NM to the SE. Other ports served include Kozukushi (1 NM SE), Sukumowan (1.4 NM NNE), Ikeshima (1.7 NM NNW), Fukaura, Ehime (6.1 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tosa-nagasakihana Lighthouse still active and maintained?+
Yes, Tosa-nagasakihana 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 Tosa-nagasakihana Lighthouse?+
Tosa-nagasakihana 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 Tosa-nagasakihana Lighthouse?+
You can track vessels near Tosa-nagasakihana 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.