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Ohako Saki Lighthouse

Fl (4) White 15s🇯🇵Kamaishi, JPOperational

Location & Light Range

About Ohako Saki Lighthouse

This white, cylindrical concrete tower stands 9 meters tall. Its focal plane is 71 meters above sea level, allowing its light a geographic range of 21.5 nautical miles. The lighthouse emits four white flashes every 15 seconds. It is situated on a sharp promontory approximately 16 kilometers northeast of Kamaishi, within Iwate Prefecture. The nearest port, Otsuchi, is 3.5 kilometers away.

Why it matters: Ohako Saki marks a sharp promontory northeast of Kamaishi, guiding vessels safely past this coastal hazard.

Light & Optic

Characteristic Signature
Fl (4) White 15s
Flash Type
Flashing
Light Color
White
Flash Count
4 flashes
Interval
15s
Raw Code
Fl W 15s
Focal Height
71m
Geographic Range
21.5NM

Location

City
Kamaishi
Country
🇯🇵Japan
Region
Iwate Prefecture
Sea Region
high on a razor-sharp promontory about 16 km northeast of Kamaishi
Latitude
39.3500°
Longitude
141.9949°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round white concrete tower

References & Identifiers

Nearest Port
Otsuchi(3.5 km)
Admiralty No.
M6594
NGA No.
4096
ARLHS No.
JPN-475
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Frequently Asked Questions

How do mariners identify Ohako Saki Lighthouse at night?+
Ohako Saki displays the characteristic Fl (4) White 15s — 4 white flashes every 15 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Ohako Saki Lighthouse guide vessels into?+
Ohako Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Kamaishi at 6.7 NM to the SW. Other ports served include Otsuchi (6.7 NM SW), Tagi (6.7 NM SW), Yamada, Iwate (6.7 NM N), Sakihama (16.2 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ohako Saki Lighthouse still active and maintained?+
Yes, Ohako 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 Ohako Saki Lighthouse?+
Ohako 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 Ohako Saki Lighthouse?+
You can track vessels near Ohako 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.