en_tn_condensed/jer/51/42.md

The sea ... roaring waves

Babylon's enemies have overcome her. "Waves" represent many people groups overcoming Babylon. The words "sea" and "water" often represent the nations. (See: rc://en/ta/man/translate/figs-metaphor)

She is covered with its roaring waves

This can be translated in active form. Alternate translation: "Its roaring waves have covered her" (See: rc://en/ta/man/translate/figs-activepassive)