INS Kattabomman

INS Kattabomman is the designation of the VLF-transmission facility of the Indian Navy situated at Vijayanarayanam near Tirunelveli in Tamil Nadu. The facility spread over 3,000 acres has 13 masts, which are arranged in two rings around the central mast. The centre mast has a height of 301 metres, the masts on the inner ring measure 276.4 metres, that on the outer ring measure 227.4 metres.

Two further masts of the station carrying an umbrella antenna are 471 metres tall and the tallest structures in India. They are also the tallest military structure in the world. The facility opened an ELF transmission facility in 2014.