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Lang Suan Lighthouse

Occ WR 5s🇹🇭Thailand, THOperational

Location & Light Range

About Lang Suan Lighthouse

This lighthouse features a round, white tower marked with yellow bands. It rises 13 meters, with its light situated at a focal height of 21 meters above the water. The light emits two white and red occulting flashes, repeating every 5 seconds. Its geographic range extends to 5 nautical miles.

Light & Optic

Characteristic Signature
Occ WR 5s
Flash Type
Occ
Light Color
WR
Flash Count
1 flash
Interval
5s
Raw Code
Oc.(2)W.R. period 5s
Focal Height
21m
Geographic Range
5NM

Location

City
Thailand
Country
🇹🇭TH
Latitude
9.9477°
Longitude
99.1591°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
13m
Tower Shape
round
Tower Color
white and yellow

Structure: White round tower, yellow banded; 13

References & Identifiers

Admiralty No.
F2920
NGA No.
20808
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Frequently Asked Questions

How do mariners identify Lang Suan Lighthouse at night?+
Lang Suan displays the characteristic Occ WR 5s — 1 wr flash every 5 seconds. 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 wr color may indicate a specific sector or warning zone.
Which ports and harbors does Lang Suan Lighthouse guide vessels into?+
Lang Suan Lighthouse assists vessels approaching 5 nearby ports. The closest is Lang Suan at 0.6 NM to the WNW. Other ports served include Chumphon (29.8 NM NNE), Ranong (31.1 NM W), RANONG (33.1 NM W), Victoria Point (36 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Lang Suan Lighthouse still active and maintained?+
Yes, Lang Suan 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 Lang Suan Lighthouse?+
You can track vessels near Lang Suan 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.