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Maruyama Saki Lighthouse

Fl (4) Green 17s🇯🇵Toba, JPOperational

This concrete cylindrical tower, standing 10 meters tall, guides vessels at the northern entrance to the Kabura Strait. Mounted on a round concrete pier, the structure's base is on a reef approximately 0.9 kilometers from Toba. Its light emits four green flashes every 17 seconds, visible for 11.3 nautical miles. The lighthouse is painted green and its site is open to visitors, though the tower itself is closed. This aid to navigation is located off the eastern tip of Sakate Shima, an island within Toba harbor.

Why it matters: The lighthouse marks the northern approach to the Kabura Strait, a passage west of Suga Shima, warning mariners of a reef hazard.

Characteristic Signature
Fl (4) Green 17s
Flash Type
Flashing
Light Color
Green
Flash Count
4 flashes
Interval
17s
Raw Code
Fl(4) G 17s
Focal Height
13m
Geographic Range
11.3NM
City
Toba
Country
🇯🇵Japan
Region
Mie Prefecture
Sea Region
Marks the northern entrance to the Kabura Strait, a passage on the west side of Suga Shima, located on a reef off the eastern tip of Sakate Shima, an island in Toba harbor.
Latitude
34.4889°
Longitude
136.8645°
Nearest Port
Toba(0.9 km)
Admiralty No.
M6047.8
NGA No.
6304
Tower Height
10m
Tower Shape
cylindrical
Tower Color
green
Material
concrete

Structure: round concrete tower, wider at the top, mounted on a round concrete pier

Open to public
Site open, tower closed
Flag
Type
Name
Dist.
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How do mariners identify Maruyama Saki Lighthouse at night?+
Maruyama Saki displays the characteristic Fl (4) Green 17s — 4 green flashes every 17 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 Maruyama Saki Lighthouse guide vessels into?+
Maruyama Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Toba at 0.9 NM to the WSW. Other ports served include Suga (1.8 NM ENE), Matoya (7.7 NM SSE), Gokasho (12 NM SW), Hamajima (12.6 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Maruyama Saki Lighthouse still active and maintained?+
Yes, Maruyama Saki 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 Maruyama Saki Lighthouse?+
Maruyama Saki 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 Maruyama Saki Lighthouse?+
You can track vessels near Maruyama Saki 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.