The ship had an EC3/ter «Gufo» radar, developed by SAFAR of Milan, this is also described in the documentary made on the sinking of the battleship where in the video in question the survivors of the crew and the children of the sailors who died that fateful day speak
the video: https://youtube.com/clip/UgkxjVAl_vTNFaXmDXltJYsvV_R6q8TzHneG?si=u42txEA11bUKLPu-
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If it’s a surface radar I don’t think any ship has their surface radars modeled. They only have the visual radar antenna modeled on the ships. Those that did both air and surface only have the air radar functioning in game.