Network from Curves query

hms rattlesnake.3dm (388.5 KB) Hi there,

I am still quite new to Rhino and I am currently trying to create a surface using the network of curves tool. However I am struggling to get the correct surface using the lines I have. How could I go about creating this ship using 1 surface, whilst get the bow and stern of the ship all in 1 piece.

Thanks,
Iain

edit: link added. Thanks pascal
http://s1.postimg.org/6uinwhsvz/test3.jpg

http://s7.postimg.org/wx618y28b/test2.jpg

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