great stuff spikes, that John Sloan pic looks totally proto-cyberpunk.
I love maritime stuff too. Could stare for hours at the paintings of Claude Lorrain and Claude-Joseph Vernet, the two French specialists of that genre:
Claude-Joseph Vernet - Le Naufrage
and of course J.M.W. Turner belongs in every post talking about seascapes
Snow Storm: Steam-Boat off a Harbour's Mouth