Maritime archaeologists and historians go in search of the crucial component in the Atlantic Slave Trade: the slave ship. An armoured, floating fortress operating for over four centuries, capturing and transporting over 12 million Africans, who were sold and forced to work in brutal conditions in the New World. By draining we reveal the cruel technology on-board, gain an insight into the horrific conditions and ID a wreck in Alabama that could be the last ever slave ship to bring Africans to American soil.