Book request: This book was about a girl on a slave ship. Nearly all of the slaves are sick, and the captain realizes that he'll make more money throwing the sick slaves overboard and collecting the insurance (I think) than by selling them. The first mate (I think) goes down to the hold to do it. When he starts throwing living slaves overboard, all the captives are shocked, but one girl has somehow learned the mate's name and calls him by it, unnerving him. That's as far as I got. I think this was a somewhat older book, maybe from the seventies or eighties. It was rather difficult.Help would be much appreciated--I really want to read this book.

Matching book description: Inspired by a true story, this suspenseful and deeply moving book chronicles an incident of courage and rebellion that took place aboard a disease-riddled slave ship returning from Africa. The vessel is named Zong, and when illness threatens to infect all on board, the ship's captain orders his crew to seize the sick men, women, and children and thow them into the sea. But Inspired by a true story, this suspenseful and deeply moving book chronicles an incident of courage and rebellion that took place aboard a disease-riddled slave ship returning from Africa. The vessel is named Zong, and when illness threatens to infect all on board, the ship's captain orders his crew to seize the sick men, women, and children and thow them into the sea. But one female slave, Mintah, survives drowning and secretly climbs back onto the ship. From her hiding place, she attempts to rouse the remaining captives to rebel against the killings, becoming a dangerous force on the ship.Powerful and poetic,  is an unforgettable testimony to the struggle against oblivion and a reminder of history overlooked and truth distorted. ...more