You can find sizes from 12 by 18 inches or larger. Try a craft or art supply store.
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You can't without destroying the cardboard.
Make one out of cardboard first. When you have the cardboard one made and you're happy with it, use it for a template to make the real deal out of steel. It's called fabrication.
100
There are three standard sizes used in the baking industry for cardboard cupcake boxes. These are for six, twelve, and twenty-four cupcakes. Anything bigger in a cardboard box tends to sag and flop around.
Cardboard displays of famous people can usually be purchased online. Sites such as Cardboard Cutouts and Hollywood Mega Store have large collections of life size cardboard cutouts.
Depends on the size of the box.
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It has 156 cubic inches
There is no "average weight" for a cardboard container, since different size containers will have different weight. Is this a candy box for 2 ounces of candy, or a box for a refrigerator? They are both cardboard containers.
It has the approximate size of a walnut.
I have found it in a craft store, it was in a package with many different kinds and colors of paper and cardboard in Legal size.
What is normal size of bladder in fetus
Probally about 300
No crystalline structure no natural occurring no definite chemicals composition
There are many excellent sites on the internet with step by step instructions on how to build things out of cardboard. The problem with your question is that you don't state whether you want a full size boat that will float on water, or a cardboard ship play house, or a table size model ship. Without that information, the best advice I can give you is to type How to build a cardboard ship into your search box, and choose the site that will be the most help.