August 30, 2018 (Google Translation) – On the trends of Chinese naval vessels
On August 28 (Tue) around 4 p.m., the Maritime Self-Defense Force No. 3 missile boat belongs to “Shirataka” (Sasebo) going north east along the waters of about 130 km southwest of Shima Tsushima Chinese navy junka I confirmed a grade II frigate.
After that, the ship northwarded the Tsushima Strait, temporarily advanced into the Sea of Japan, but 29 I confirmed that I sailed down the Tsushima Strait on Sunday (Wednesday) and sailed towards the East China Sea.
Really don't know what's the big deal it seems the Chinese Navy go through it all the time and isn't it freedom of navigation
Japanese EEZ - economist.com
Map of the Tsushima Strait
Published on Sep 15, 2017
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Type 054A (Jiangkai II): Details