Thomas Moran is most famous for painting the American landscape. But he also painted a few seascapes, of which I like these two best. .
Moonlit Seascape. 1902. Oil on canvas, 101.6 x 76.2 cm.
A Mountain of Loadstone, 1898. Oil on canvas, 76.2 × 50.8 cm (30 × 20 in)