What is the best material to build a buoyant boat with?


For science class in school I have to build a boat that is buoyant so can you please give me advie on which material is it best, easiest and fastest material I can build a boat with (since I have to finish this project in 2 weeks time). thankyou for ur answers =)
I would appreciate websites that tell you how to do this thanks =)
I don;t want it too big or too small no more than 25cm and I don;t want it to look messy thanks again lol =S

a boat can be made of many things…the buoyancy of the raw materials is not always that impotant. If it were, we wouldn’d have aluminum fishing boats, or steel battleships. If you are willing to add some structure to your boat, your options for materials are greatly improved.
Sure, stryrofoam floats on its own. But it isn’t used for boating, cuz it has very little durability. Even if you make it "structural", it’s bouyancy vs its size makes it an inefficient choice. Sure, it would weigh less than other boats, but it would take up a lot more room, or be able to carry less.
Wood is a great choice, especially if you get your hands on waterproof glue. Wood is great, because, like styrofoam, it floats on its own, even if the boat is upspide down.
Styrene plastic, which chemically is very similar to Stryrofoam, except it isn’t foam, is a great choice. It is the plastic that most of your model cars, etc are made of. It can be cut easily, often with a heavy pair of scissors. It glues quickly with the proper solvent. It is a nice choice if you don’t have wood-working cababilities.
You can also use cardboard, believe it or not. The cereal box kind is better than the shipping box kind, but whatever. When you are done gluing it all up, make sure it is sturdy. Then coat it with some oil-based paint. Let it dry for a day, and coat it again. Make sure none of the cardboard is showing through the paint. It will be waterproof, and it will float.
If you are lucky enough to find some parrafin(wax), you can soak it in that instead of painting. But I don’t know how big your boat is.



5 Responses to “What is the best material to build a buoyant boat with?”

  1. The CLB Says:

    Styrofoam.
    References :

  2. sofy Says:

    i think u should take soft cardboard
    References :

  3. sam w Says:

    Depends on how big. Wax if it is small. Styrofoam if it doesn’t have to be pretty. You will get better answers if you say how big, and any other consraints the teacher gave you
    References :
    common sense

  4. Munkstump Says:

    a boat can be made of many things…the buoyancy of the raw materials is not always that impotant. If it were, we wouldn’d have aluminum fishing boats, or steel battleships. If you are willing to add some structure to your boat, your options for materials are greatly improved.
    Sure, stryrofoam floats on its own. But it isn’t used for boating, cuz it has very little durability. Even if you make it "structural", it’s bouyancy vs its size makes it an inefficient choice. Sure, it would weigh less than other boats, but it would take up a lot more room, or be able to carry less.
    Wood is a great choice, especially if you get your hands on waterproof glue. Wood is great, because, like styrofoam, it floats on its own, even if the boat is upspide down.
    Styrene plastic, which chemically is very similar to Stryrofoam, except it isn’t foam, is a great choice. It is the plastic that most of your model cars, etc are made of. It can be cut easily, often with a heavy pair of scissors. It glues quickly with the proper solvent. It is a nice choice if you don’t have wood-working cababilities.
    You can also use cardboard, believe it or not. The cereal box kind is better than the shipping box kind, but whatever. When you are done gluing it all up, make sure it is sturdy. Then coat it with some oil-based paint. Let it dry for a day, and coat it again. Make sure none of the cardboard is showing through the paint. It will be waterproof, and it will float.
    If you are lucky enough to find some parrafin(wax), you can soak it in that instead of painting. But I don’t know how big your boat is.
    References :
    building models and prototypes.

  5. Technobuff Says:

    It is unimportant what material a boat is made from, so long as it displaces more water than it weighs.
    So I would suggest aluminium foil. Just fold and tuck to form whatever shape you want. It is cheap, easily worked with, and waterproof.
    References :

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