Is a wooden seam bolted tight waterproof?

I am consider the following concept: Building a boat out of 32" by 8" Planks, held together by bolts and brackets. The boat will a keel with a V cut in on either 8 * 2s will be bolted and levels of planks will over lap and be bolted together. I plan on matching the angles to the that the touching surfaces are flat against each other. I am wondering the pressure from well placed bolts and brackets could make the craft water tight? I'm open to ideas that might make this concept work/work better.