This is one I bet many have had problems with . How do you get that beautiful compound curve at the bow that creates that beautiful or utilitarian flare ?
First you need a pot of your own . A standard saucepan will do . And one of those racks for steaming that fits inside .If you build and complete many in a year this will save a lot of time . Do NOT use MaMa’s pots , she’ll do you in !
Bring water to a boil with at least two inches of water over the rack . Drop in plastic piece you’ll use . Boil till soft and place over the mold and let cool naturally .
Now , the mold . Have you seen those ridiculously big serving spoons in BBQ sets ? that;s your mold. If it’s room temperature it works best .
After cooling take plastic part off the mold and cut out the area you’ll need . Save the rest for filler if you need it ( after all it’s already curved ! ).
Yes ! it’s actually that simple ! Tanker - Builder P.S. This works for the stern and bow, so , no more be said .
I think we sometimes take the term plastic models too seriously. We are not required by IPMS to stick to plastic any more. Making model ship hulls is what God created basswood for 
Not sure what you’re trying to do and what you think you’re gaining. A hull is a continuous structure with flowing curves. Every hull is different. It’s not like you can use generic curves.
Don is right…that’s what basswood is for. It’s a lot easier to work than plastic.
It just isn’t that hard…here
http://paulbudzik.com/current-projects/Enterprise%20Scratch/Enterprise_Scratch.html
Paul
No ;
It isn’t that hard .But when you live in a home where the other two occupants have serious allergies to ANY form of wood dust , you cannot in good consiousnness work on wood in their home . My Avatar is All wood .Those were built of good old Basswood , Mahogany , Oak and Cedar years ago .
Yes , Don and Paul , they are still gorgeous . , Inside and out . You see , when working on the fence even , I have to cut the wood out in the far part of the yard or on the front sidewalk . Built stuff and it’s ephemera doesn’t seem to bother them . ONLY fresh sawdust !
I hear you. In my old age I have developed an allergy to wood dust. I now have to wear a dust mask when sanding wood models 
Ah Don ;
It’s just one of the things we have to deal with .I didn’t used to be bothered by the smell when I cut Lucite or Plexiglas . It will make me sneeze real bad now .So it’s mask time for that stuff .