ORP Grom (1957) explained

ORP Grom was a Project 30bis destroyer, sold to the People's Republic of Poland by the Soviet Union in 1957. She was built by the Zhdanov Shipyard in Leningrad and originally served in the Soviet Baltic Fleet as the Sposobnyy. She served together in the Polish Navy with her sister ship until 1973. The ship was scrapped in 1977. Her remainings together with the Wicher were sunk in Hel as breakwaters, where they remain to this day.

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54.6133°N 18.7783°W