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Laem Yai Lighthouse

Fl White 5s🇹🇭THOperational

Location & Light Range

About Laem Yai Lighthouse

Also known as: Laem Yai (Ko Samui)

This metal lighthouse stands 15 meters tall with a square pyramidal skeletal tower painted white. Its focal height reaches 58 meters, casting a white light with a characteristic of a single white flash every 5 seconds. It is located on a sharp promontory at the northwestern tip of Ko Samui, approximately 5.4 kilometers from the nearest port. The lighthouse has a geographic range of 19.8 nautical miles, serving as a navigational aid in the Gulf of Thailand. Its structure is a square pyramidal skeletal tower, painted white.

Why it matters: This lighthouse marks a critical point on Ko Samui, guiding vessels navigating the waters between the island, Ko Phangan, and the mainland. Its white flash every five seconds provides a clear signal for safe passage in this shipping lane.

Light & Optic

Characteristic Signature
Fl White 5s
Flash Type
Flashing
Light Color
White
Interval
5s
Raw Code
Fl W 5s
Focal Height
58m
Geographic Range
19.8NM

Location

Country
🇹🇭TH
Latitude
9.5703°
Longitude
99.9150°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
15m
Tower Shape
square
Tower Color
white
Material
metal

Structure: square pyramidal skeletal tower, painted white

References & Identifiers

Nearest Port
Koh Samui(5.4 km)
Admiralty No.
F2915
NGA No.
20820
ARLHS No.
THA-053
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Frequently Asked Questions

How do mariners identify Laem Yai Lighthouse at night?+
Laem Yai displays the characteristic Fl White 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Laem Yai Lighthouse guide vessels into?+
Laem Yai Lighthouse assists vessels approaching 5 nearby ports. The closest is Ko Samui at 2.3 NM to the SSE. Other ports served include Koh Samui (5.4 NM S), Khanom (20.3 NM S), Nakhon Si Thammarat (20.4 NM S), Pak Phanang (22.3 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Laem Yai Lighthouse still active and maintained?+
Yes, Laem Yai 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 Laem Yai Lighthouse?+
You can track vessels near Laem Yai 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.