This water tells my story,
The water can be fast, slow, hot, cold… He compares the water with his story, life. Like the water is unpredictable so is his life, it can change anytime.
Frank essentially saying that, the water tells the story of black people (hence the my story line) and the slave ships, “this water tells my story”, the story of the slaves and the slave ships, from Africa to America and all of those who where lost on the way, hence the next line “This water knows it all”
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