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Sunharon Lighthouse

Fl G 4s🇲🇵Northern Mariana Islands, MPInactive

Location & Light Range

About Sunharon Lighthouse

This navigational aid is a 13-meter green post topped with a green triangle daymark pointing upwards. Its focal height reaches 21 meters above sea level. The light emits a green flash every 4 seconds, with a geographic range of 4 nautical miles. This post structure is located in the Northern Mariana Islands.

Light & Optic

Characteristic Signature
Fl G 4s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
4s
Raw Code
Fl.G. period 4s
Focal Height
21m
Geographic Range
4NM

Location

City
Northern Mariana Islands
Country
🇲🇵MP
Latitude
14.9705°
Longitude
145.6238°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
13m
Tower Color
green

Structure: Post, green triangle, point up daymark; 13

References & Identifiers

Admiralty No.
M8370
NGA No.
10962
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Frequently Asked Questions

How do mariners identify Sunharon Lighthouse at night?+
Sunharon displays the characteristic Fl G 4s — 1 green flash every 4 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Sunharon Lighthouse guide vessels into?+
Sunharon Lighthouse assists vessels approaching 2 nearby ports. The closest is TINIAN at 0.5 NM to the S. Other ports served include Saipan (16.7 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sunharon Lighthouse still active and maintained?+
Sunharon Lighthouse is currently listed as inactive. It may have been decommissioned, replaced by a different navigation aid, or temporarily taken out of service. Mariners should check the latest Notices to Mariners for current status.
How can I track vessels near Sunharon Lighthouse?+
You can track vessels near Sunharon 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.