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

Chinu Saki Lighthouse

Oc Green 4s🇯🇵Tsukumi, JPOperational

Location & Light Range

About Chinu Saki Lighthouse

Chinu Saki Lighthouse stands on the southern side of the entrance to Tsukumi Bay, marking the end of a breakwater off the Chinu Saki promontory. Constructed from concrete, the tower is cylindrical and flares at its top, reaching a height of 8.5 meters with a focal height of 11 meters. It emits a green light that flashes with an occulting characteristic every 4 seconds, visible for 10.7 nautical miles. The site is open to visitors, but the tower itself is closed. Its nearest port is Tsukumi, located 0.8 kilometers away.

Why it matters: This lighthouse is essential for safe navigation into Tsukumi Bay, guiding local fishing vessels and commercial traffic past the breakwater and the Chinu Saki promontory.

Light & Optic

Characteristic Signature
Oc Green 4s
Flash Type
Occulting
Light Color
Green
Interval
4s
Raw Code
Oc G 4s
Focal Height
11m
Geographic Range
10.7NM

Location

City
Tsukumi
Country
🇯🇵Japan
Region
Oita Prefecture
Sea Region
Located at the end of a breakwater off the Chinu Saki promontory, on the south side of the entrance to Tsukumi Bay.
Latitude
33.0877°
Longitude
131.8835°

References & Identifiers

Nearest Port
Tsukumi(0.8 km)
Admiralty No.
M4929
NGA No.
10552
USCG No.
JCG-5721

Tower & Structure

Tower Height
8.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round concrete tower flared at the top

Visiting

Open to public
Site open, tower closed

Nearby Vessels

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

Find Chinu Saki 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 Chinu Saki Lighthouse at night?+
Chinu Saki displays the characteristic Oc 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 Chinu Saki Lighthouse guide vessels into?+
Chinu Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Tsukumi at 0.8 NM to the WSW. Other ports served include Usuki (4.4 NM WNW), Saiki (6.7 NM SSE), Urashiro (7.7 NM SSE), Saganoseki (9.5 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Chinu Saki Lighthouse still active and maintained?+
Yes, Chinu 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 Chinu Saki Lighthouse?+
Chinu 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 Chinu Saki Lighthouse?+
You can track vessels near Chinu 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.