I have just started using Blender and have nearly compleated the Tutorials. The reason I began learning is to aid my attempts to make a World of Warcraft fan film based around the short stories I post on my Guild’s forum. 
I have been using WoW itself along with a screen capture program (fraps) for most of the filming but one element of the story includes a vehicle I described as a product of Gnommish engineering, Atton’s submersion facilitating Nautichron. My question is, can anyone give advice on how I would go about modelling this into Blender? 
The Nautichron
