Iwo Jima LORAN-C transmitter

The Iwo Jima LORAN-C transmitter is a navigation radio station located on Iwo Jima island in Japan. It broadcast on 100 kilohertz and covered a large area of the Pacific Ocean to help ships and aircraft find their way.

The facility was built in 1963 and collapsed catastrophically in 1964 when a guy wire insulator failed, killing four workers. After this disaster, an identical replacement tower was constructed and continued operating under Japanese control from 1993 onward.

The transmitter represented Japan's commitment to international maritime safety and technological advancement in the post-war reconstruction period.

The site sits on a remote island in the Pacific and is accessible to visitors only under specific conditions and with permission. You should allow time to carefully explore the infrastructure and surroundings.

After its structural failure, engineers constructed an identical replacement tower that continued operations under Japanese government control from 1993.

Location: Ogasawara Village

Inception: 1963

Height: 411.5 m

GPS coordinates: 24.80222,141.32556

Latest update: December 10, 2025 15:55