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Naa Inner Breakwater Lighthouse

Fl Green 4s🇰🇷Gyeongju-si, KROperational

Location & Light Range

About Naa Inner Breakwater Lighthouse

A round, cylindrical concrete tower, 10 meters in height, is painted white. Its focal plane reaches 15 meters above sea level. The structure emits a green light with the characteristic Fl G 4s, observable up to 11.9 nautical miles. Located on the south breakwater of the harbor in Gyeongju-si, North Gyeongsang, South Korea, this concrete construction serves as a navigation marker. The grounds are accessible to visitors, but the tower is not.

Why it matters: This structure marks the south breakwater, offering a reference point for vessels navigating into and out of the nearby port.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
15m
Geographic Range
11.9NM

Location

City
Gyeongju-si
Country
🇰🇷South Korea
Region
North Gyeongsang
Sea Region
south breakwater of the harbor
Latitude
35.7077°
Longitude
129.4796°

References & Identifiers

Nearest Port
Ulsan(14.0 km)
Admiralty No.
M4397.79.
NGA No.
16672.6

Tower & Structure

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

Structure: round cylindrical concrete tower, painted white

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Naa Inner Breakwater Lighthouse at night?+
Naa Inner Breakwater displays the characteristic Fl Green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Naa Inner Breakwater Lighthouse guide vessels into?+
Naa Inner Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Mipo/Ulsan at 11.7 NM to the S. 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 Inner Breakwater Lighthouse still active and maintained?+
Yes, Naa Inner 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 Inner Breakwater Lighthouse?+
Naa Inner 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 Inner Breakwater Lighthouse?+
You can track vessels near Naa Inner 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.