Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Gangyang Lighthouse

Fl Green 5s🇰🇷Ulsan, KROperational

Location & Light Range

About Gangyang Lighthouse

Located at the Hoeya River entrance in Gangyang, South Korea, this lighthouse is a green, solid concrete pillar construction measuring 11 meters in height. It has a focal plane of 10 meters above sea level. The light is green, flashing rhythmically every 5 seconds (Fl G 5s), and is visible for a distance of 10.4 nautical miles. The structure includes a gallery. While the grounds are open to visitors, the tower remains closed. The nearest port, Ulsan, is 7.4 kilometers away.

Why it matters: The Gangyang lighthouse marks the entrance to the Hoeya River, serving as a navigation aid. Its unique green pillar design distinguishes it from other harbor markers in the area.

Light & Optic

Characteristic Signature
Fl Green 5s
Flash Type
Flashing
Light Color
Green
Interval
5s
Raw Code
Fl G 5s
Focal Height
10m
Geographic Range
10.4NM

Location

City
Ulsan
Country
🇰🇷South Korea
Region
Ulju-gun
Sea Region
Hoeya River entrance at Gangyang, South Korea
Latitude
35.3897°
Longitude
129.3460°

References & Identifiers

Nearest Port
Ulsan(7.4 km)
Admiralty No.
M4378.2
NGA No.
16711.9

Tower & Structure

Tower Height
11m
Tower Shape
pillar
Tower Color
green
Material
concrete

Structure: solid concrete pillar with gallery, painted green

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Gangyang Lighthouse on the live nautical map

Plan voyages near South Korea, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Gangyang Lighthouse at night?+
Gangyang displays the characteristic Fl Green 5s. 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 Gangyang Lighthouse guide vessels into?+
Gangyang Lighthouse assists vessels approaching 5 nearby ports. The closest is Onsan/Ulsan at 3 NM to the NNE. Other ports served include Ulsan (7.5 NM NNE), Mipo/Ulsan (8.7 NM NNE), Busanjin-Gu (20.4 NM SW), South Busan (20.8 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Gangyang Lighthouse still active and maintained?+
Yes, Gangyang 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 Gangyang Lighthouse?+
Gangyang 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 Gangyang Lighthouse?+
You can track vessels near Gangyang 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.