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

jāo Lighthouse

Fl White 1.5s🇨🇳Shengsi County, CNOperational

Location & Light Range

About jāo Lighthouse

Also known as: jāo (Inner Horseshoe Reef)

This cylindrical concrete tower stands 7.5 meters tall and is painted white. Located on a reef off the southern coast of Sìjiāo, the lighthouse emits a single white flash every 1.5 seconds. Its focal plane is 11 meters above the water, providing a geographic range of 10.7 nautical miles. The lighthouse is situated in Shengsi County within China's Zhejiang region. It is approximately 1 kilometer from Maji Shan, the nearest port.

Why it matters: The lighthouse warns vessels of the dangerous reef it occupies off Sìjiāo's southern coast, aiding in safe passage.

Light & Optic

Characteristic Signature
Fl White 1.5s
Flash Type
Flashing
Light Color
White
Interval
1.5s
Raw Code
Fl W 1.5s
Focal Height
11m
Geographic Range
10.7NM

Location

City
Shengsi County
Country
🇨🇳China
Region
Zhejiang
Sea Region
A reef off the southern coast of Sìjiāo.
Latitude
30.6720°
Longitude
122.4362°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
7.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round tower, painted white

References & Identifiers

Nearest Port
Maji Shan(1.0 km)
Admiralty No.
P3740.025
NGA No.
18878.5
Live tracking · 50,000+ mariners

Find jāo Lighthouse on the live nautical map

Plan voyages near China, 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 jāo Lighthouse at night?+
jāo displays the characteristic Fl White 1.5s. 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 jāo Lighthouse guide vessels into?+
jāo Lighthouse assists vessels approaching 5 nearby ports. The closest is Maji Shan at 2.1 NM to the NNE. Other ports served include Lü-hua Shan (10.7 NM NE), Yangshan (19.5 NM W), Yangshan (19.5 NM W), CJK (32.8 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is jāo Lighthouse still active and maintained?+
Yes, jāo 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 jāo Lighthouse?+
You can track vessels near jāo 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.