Wow, now this I am very pleasantly surprised by. The size of the ancient kraken... Is that for real? If so, I would imagine that you'd only have at max one in your entire fleet.
These things could do some real damage in a harbour. Imagine one pulling down the sea wall so that troops can land. That would be so epic.
Also, I'm really liking the concept art for the elven transport. It's just wonderful that you're still expanding on the "look and feel" of each of the different races.
Fantastic work, keep it up!