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Dotomeorido (Sinsido Northwest Lighthouse

Fl Green 4s🇰🇷Gunsan-si, KROperational

Location & Light Range

About Dotomeorido (Sinsido Northwest Lighthouse

Dotomeorido (Sinsido Northwest) Lighthouse is a round, green concrete tower standing 15 meters tall. Its light is positioned 12 meters above sea level and emits a single green flash every four seconds. This structure serves as an active aid to navigation, marking a reef off the northwestern tip of Sinsido, South Korea. The lighthouse is located near Gunsan-si, approximately 11.3 kilometers from the nearest port. While visitors can access the site by boat, the tower itself is closed to the public.

Why it matters: This lighthouse warns mariners of a submerged reef off Sinsido's northwestern tip, a hazard to vessels navigating these coastal waters.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
12m
Geographic Range
11NM

Location

City
Gunsan-si
Country
🇰🇷South Korea
Region
Jeonbuk State
Sea Region
a reef off the northwestern tip of Sinsido, South Korea
Latitude
35.8292°
Longitude
126.4442°

References & Identifiers

Nearest Port
Gunsan(11.3 km)
Admiralty No.
M4206.36.
NGA No.
M4206.36

Tower & Structure

Tower Height
15m
Tower Shape
cylindrical
Tower Color
green
Material
concrete

Structure: round green concrete tower

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 Dotomeorido (Sinsido Northwest Lighthouse at night?+
Dotomeorido (Sinsido Northwest 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 Dotomeorido (Sinsido Northwest Lighthouse guide vessels into?+
Dotomeorido (Sinsido Northwest Lighthouse assists vessels approaching 5 nearby ports. The closest is Gunsan at 11.3 NM to the NE. Other ports served include Janghang/Seocheon-gun (15.9 NM NE), Biin (17.4 NM N), Sangwangdeungdo (18.6 NM SW), Daecheon (29.4 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Dotomeorido (Sinsido Northwest Lighthouse still active and maintained?+
Yes, Dotomeorido (Sinsido Northwest 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.
How can I track vessels near Dotomeorido (Sinsido Northwest Lighthouse?+
You can track vessels near Dotomeorido (Sinsido Northwest 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.