To add to the Boat Art trend, there are many commercial artists that specialize in boat and maritime subjects... I'll try to add to these as I find them.

• Ovid Osborn Ward
• Military Art Gallery - naval and other
• Tom Freeman - I'm going to list one source of prints here - he's just an incredible artist. A friend of mine knows Mr. Freeman personally and has a couple of his originals (lucky bum).
• Andrej Belic - underwater photography
• Tiller Books - a publisher that has some good art available, in addition to some fine maritime books and resources