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According to Alfredo De Cristofaro's latest research the radio room below belonged to a cargo ship or a research vessel on duty for Russian Navy, I have investigated the callsign RMKD and it is a Navy callsign and this type of call could be assigned to Navy ships or civilian vessels affiliated or on duty for the Navy, I suppose this ship now is dead but I never found the ship's name. So I re-post the photo to have any possible help to find which was the ship.
73
R/O Alfredo
Yuuri
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Mar 19, 2026, 3:06:11 AM (yesterday) Mar 19
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Nice radio room - this does not look like Navy at all. :)
Call sign RMKD = NIS Akademik Kurchatov (USSR)
Year of construction: 1971 (?)
Owner: USSR Academy of Sciences / Institute of Oceanology
Port of registry: Leningrad Type