Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Toi Kō South Breakwater Lighthouse

Fl Green 4s🇯🇵Hakodate, JPOperational

Location & Light Range

About Toi Kō South Breakwater Lighthouse

A white, cylindrical concrete tower 11 meters high, standing on the south breakwater at the entrance to a harbor on the east side of Hiura Misaki. The structure, which has a focal height of 12 meters, is round and hourglass-shaped, with a lantern and gallery at the top. It displays a green light with a characteristic of Fl G 4s, visible for 11 nautical miles. The site is accessible, but the tower is not open to visitors.

Why it matters: This structure marks the harbor entrance, serving as a navigation aid for ships approaching the port of Toyoura, which is 2.8 km away. Its unique form also distinguishes the local coastline.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
12m
Geographic Range
11NM

Location

City
Hakodate
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
Located on the south breakwater of a small harbor on the east side of Hiura Misaki.
Latitude
41.7178°
Longitude
141.0260°

References & Identifiers

Nearest Port
Toyoura(2.8 km)
ARLHS No.
JPN-996

Tower & Structure

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

Structure: round hourglass-shaped concrete tower with lantern and gallery

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Toi Kō South Breakwater Lighthouse on the live nautical map

Plan voyages near Japan, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Toi Kō South Breakwater Lighthouse at night?+
Toi Kō South Breakwater displays the characteristic Fl Green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Toi Kō South Breakwater Lighthouse guide vessels into?+
Toi Kō South Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Toyoura at 2.7 NM to the NE. Other ports served include Odoh (8.9 NM NE), Todohokke (8.9 NM NE), Oma (12.5 NM SSW), Usujiri (13.5 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Toi Kō South Breakwater Lighthouse still active and maintained?+
Yes, Toi Kō 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 Toi Kō South Breakwater Lighthouse?+
Toi Kō 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 Toi Kō South Breakwater Lighthouse?+
You can track vessels near Toi Kō 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.