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Naa Outer Breakwater Lighthouse

Fl Red 4s🇰🇷Gyeongju-si, KROperational

Location & Light Range

About Naa Outer Breakwater Lighthouse

This red, cylindrical concrete tower stands 10 meters tall on the main breakwater of the harbor at Naa. Its focal plane reaches 13.1 meters above sea level. The light emits a single red flash every 4 seconds, visible for 11.3 nautical miles. It serves the harbor associated with the Wolseong Nuclear Power Plant, located in the Gyeongju-si area of the North Gyeongsang province. The structure is not accessible to the public.

Why it matters: The lighthouse is essential for the safe navigation of vessels servicing the Wolseong Nuclear Power Plant, guiding them into the harbor.

Light & Optic

Characteristic Signature
Fl Red 4s
Flash Type
Flashing
Light Color
Red
Interval
4s
Raw Code
Fl R 4s
Focal Height
13.1064m
Geographic Range
11.3NM

Location

City
Gyeongju-si
Country
🇰🇷South Korea
Region
North Gyeongsang
Sea Region
main breakwater of the harbor at Naa, serving the Wolseong Nuclear Power Plant
Latitude
35.7071°
Longitude
129.4816°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round cylindrical concrete tower, painted red

References & Identifiers

Nearest Port
Ulsan(14.0 km)
Admiralty No.
M4397.791.
NGA No.
M4397.791
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Frequently Asked Questions

How do mariners identify Naa Outer Breakwater Lighthouse at night?+
Naa Outer Breakwater displays the characteristic Fl Red 4s. 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 Naa Outer Breakwater Lighthouse guide vessels into?+
Naa Outer Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Mipo/Ulsan at 11.7 NM to the SSW. Other ports served include Ulsan (12.7 NM SSW), Guryongpo (16.9 NM NNE), Onsan/Ulsan (17.2 NM SSW), Pohang (18.9 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Naa Outer Breakwater Lighthouse still active and maintained?+
Yes, Naa Outer Breakwater 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 Naa Outer Breakwater Lighthouse?+
Naa Outer Breakwater 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 Naa Outer Breakwater Lighthouse?+
You can track vessels near Naa Outer Breakwater 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.