The Slave Ship, J.M.W. Turner, exhibited in 1840.

lydia and i were talking about this painting today. Turner painted The Slave Ship to assist in the abolitionist campaign. He was inspired by lines from James Thomson's poem, The Seasons:

"Increasing still the Terrors of these Storms,
His Jaws horrific arm'd with threefold Fate,
Here dwells the direful Shark. Lur'd by the Scent
Of steaming Crrouds, of rank Disease, and Death,
Behold! he rushing cuts the briny Flood,
Swift as the Gale can bear the Ship along;
And, from the Partners of the cruel Trade,
Which spoils unhappy Guinea of her Sons,
Demands his share of Prey, demands themselves.
The stormy Fate descend: one Death involves
Tyrants and Slaves; when strait, their mangled Limbs
Crashing at once, he dyes the purple Seas
With Gore, and riots in the Venegeful Meal."
'Summer', ll.1013-25