Japan Coast Guard announced the closing of the Vessel Traffic Information broadcasting of all 7 stations in Japan on July 1, 2025. Before the closing some information (4 items out of 8) will not be announced after October 1, 2024.
Original information (in Japanese) is at
https://www6.kaiho.mlit.go.jp/tokyowan/oshirase/0001_20240918100954222_JA_401_OTH.html
https://www6.kaiho.mlit.go.jp/osakawan/oshirase/0004_20240910131128052_JA_401_OTH.html
All the transmissions are using JRC TWM-5A transmitters, power 10W, type H3E (LSB with full carrier). Transmissions on 1665/1651kHz are in Japanese, on 2019kHz are in English, operating 24H.
MARTIS: Maritime Information Service, HR: Harbour Radar.
Tokyo MARTIS Yokohama *1 1665kHz 00/30min 2019kHz 15/45min
Nagoya HR Nagoya *2 1665kHz 00/30min 2019kHz 15/45min
Ise Bay MARTIS Tahara City, Aichi pref. *3 1665kHz 15/45min 2019kHz 00/30min
Osaka MARTIS Kobe *4 1651kHz 15/45min 2019kHz 00/30min
Kurushima MARTIS Imabari City, Ehime pref. *5 1651kHz 15/45min 2019kHz 00/30min
Bisan MARTIS Utatsu Town, Kagawa pref. *6 1651kHz 00/30min 2019kHz 15/45min
Kanmon MARTIS Kitakyushu *7 1651kHz 00/30min 2019kHz 15/45min
Exact addresses
*1 Kita-Nakadoori 5-57, Yokohama, Kanagawa pref. 231-8818
*2 Kinjo Futou 3-1, Minatoku, Nagoya, Aichi pref. 455-0848
*3 Koyama 2814-38, Irago-cho, Tahara City, Aichi pref. 441-3624
*4 Minatojima-minami-cho 7-2-22, Kobe, Hyogo pref. 650-0047
*5 Minato-cho 2-5-100, Imabari City, Ehime pref. 794-0003
*6 Aonoyama 3810-2, Utatsu Town, Kagawa pref. 769-0200
*7 Matsubara 2-10-11,Moji-ku, Kitakyushu, Fukuoka pref. 800-0064
Takahito Akabayashi Tokyo, Japan to WOR iog (2024-09-21)