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Zizū Lighthouse

Fl White 4s🇯🇵Shichigahama, JPOperational

Location & Light Range

About Zizū Lighthouse

Also known as: Zizū (Jizo) Shima

Zizū Lighthouse is a white, cylindrical concrete tower 11 meters tall. Situated in Shichigahama within Miyagi Prefecture, Japan, it stands 21 meters above sea level. This lighthouse emits a single white flash every 4 seconds, visible for 13.4 nautical miles. It is located 0.6 kilometers from the nearest port of Shiogama. The structure is a round concrete cylinder, marking its operational status for maritime traffic.

Why it matters: This lighthouse contributes to the safety of vessels navigating the local sea lanes. Its consistent light signal serves as a reliable reference for mariners supporting regional trade and fishing activities.

Light & Optic

Characteristic Signature
Fl White 4s
Flash Type
Flashing
Light Color
White
Interval
4s
Raw Code
Fl W 4s
Focal Height
21m
Light Range
5NM (9.3 km)
Geographic Range
13.4NM

Location

City
Shichigahama
Country
🇯🇵Japan
Region
Miyagi Prefecture
Latitude
38.3227°
Longitude
141.0711°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
11m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical concrete tower

References & Identifiers

Nearest Port
Shiogama(0.6 km)
ARLHS No.
JPN-1150
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Frequently Asked Questions

How far offshore can Zizū Lighthouse be seen?+
With a focal height of 21 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Zizū is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Zizū Lighthouse at night?+
Zizū displays the characteristic Fl White 4s. 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 Zizū Lighthouse guide vessels into?+
Zizū Lighthouse assists vessels approaching 5 nearby ports. The closest is Sendai, Miyagi at 1.3 NM to the W. Other ports served include Satoura (1.8 NM WSW), Isozaki (3 NM N), Sendaishiogama (3.7 NM SW), Takami (6.3 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Zizū Lighthouse still active and maintained?+
Yes, Zizū 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 Zizū Lighthouse?+
Zizū 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 Zizū Lighthouse?+
You can track vessels near Zizū 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.