Try selecting the blue and running network from this file. You can also do it with loft. The curves would have to be selected properly.

Here are a couple links to past ship hull threads.. Something to pay attention to, is, like in this file, if you refer to the bow after doing network on the blue curves, you will see it is not a very quality surface. In the threads linked to here, Michael discusses building the initial surfaces "Larger and going past those boundries", then trimming them back to the dimensions... This makes for a more well defined surface...

The links talk about some of the pitfalls that others have faced, and provide some solutions...

http://moi3d.com/forum/messages.php?webtag=MOI&msg=3002.1

http://moi3d.com/forum/index.php?webtag=MOI&msg=3052.1