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Sendai South Breakwater Lighthouse

Fl (2) Green 6s🇯🇵Sendai, JPOperational

Location & Light Range

About Sendai South Breakwater Lighthouse

A round cylindrical concrete tower, 12 meters in height, the Sendai South Breakwater Lighthouse was first lit in 2013. It is painted white and stands 15 meters above sea level. The light emits a green flash every 6 seconds and has a geographic range of 11.9 nautical miles. This structure replaced a lighthouse that was heavily damaged and torn from its foundations by the March 2011 tsunami. The current light is a replica of the one that stood before the disaster.

Why it matters: Reconstructed after the 2011 tsunami, this lighthouse ensures safe passage into Sendai Harbor. Its lantern dome features a crescent symbol, honoring the city's founder, Date Masamune.

Light & Optic

Characteristic Signature
Fl (2) Green 6s
Flash Type
Flashing
Light Color
Green
Flash Count
2 flashes
Interval
6s
Raw Code
Fl G 6s
Focal Height
15m
Geographic Range
11.9NM

Construction & History

Year Built
2013

Significant events: Breakwater extended in 1997-98 requiring a new lighthouse; heavily damaged by tsunami in March 2011, torn from foundations; new light installed in July 2013, a shorter copy of the 1998 light.

References & Identifiers

Nearest Port
Sendai(3.0 km)
Admiralty No.
M6521.1
NGA No.
4464
ARLHS No.
JPN-2639

Tower & Structure

Tower Height
12m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical concrete tower with lantern and gallery, painted white

Location

City
Sendai
Country
🇯🇵Japan
Region
Miyagi Prefecture
Sea Region
Located at the end of the south outer breakwater, marking the entrance to the harbor of Sendai.
Latitude
38.2654°
Longitude
141.0468°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Sendai South Breakwater Lighthouse at night?+
Sendai South Breakwater displays the characteristic Fl (2) Green 6s — 2 green flashes every 6 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 Sendai South Breakwater Lighthouse guide vessels into?+
Sendai South Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Sendaishiogama at 1.4 NM to the WNW. Other ports served include Satoura (3.1 NM NNW), Sendai, Miyagi (3.2 NM N), Isozaki (6.6 NM N), Takami (9.5 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sendai South Breakwater Lighthouse still active and maintained?+
Yes, Sendai South Breakwater 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 Sendai South Breakwater Lighthouse?+
Sendai South Breakwater 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 Sendai South Breakwater Lighthouse?+
You can track vessels near Sendai South Breakwater 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.