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Obera Shima Lighthouse

Fl W 3s🇯🇵Wakayama Prefecture, JPOperational

Location & Light Range

About Obera Shima Lighthouse

This white conical lighthouse stands 49 meters tall in Wakayama Prefecture. The structure's focal height reaches 19 meters above sea level. It emits a single white flash every 3 seconds. The lighthouse has a geographic range of 5 nautical miles.

Light & Optic

Characteristic Signature
Fl W 3s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
3s
Raw Code
Fl.W. period 3s
Focal Height
19m
Geographic Range
5NM

Location

City
Wakayama Prefecture
Country
🇯🇵JP
Latitude
33.6359°
Longitude
135.9814°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
49m
Tower Shape
conical
Tower Color
white

Structure: White tower; 49

References & Identifiers

Admiralty No.
M6006.8
NGA No.
6696
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Frequently Asked Questions

How do mariners identify Obera Shima Lighthouse at night?+
Obera Shima displays the characteristic Fl W 3s — 1 white flash every 3 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.
Which ports and harbors does Obera Shima Lighthouse guide vessels into?+
Obera Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Katsuura, Wakayama at 1.9 NM to the WSW. Other ports served include Shingu (2.2 NM N), Sue (13.2 NM SW), KUSHIMOTO (13.9 NM SW), Fukuro (14.2 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Obera Shima Lighthouse still active and maintained?+
Yes, Obera Shima 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.
What shipping routes pass near Obera Shima Lighthouse?+
Obera Shima Lighthouse is located within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Obera Shima Lighthouse?+
You can track vessels near Obera Shima 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.