After planning what our boat would look like, the materials we would use to make it and the tools that we would need, we created a small model to test its ability to float.  We decided that this test would need to be the same for each boat in order for it to be fair.  These are the variables that we kept the same;

• The boat would need to float for 15 seconds.
• The boat would need to support a weight of 100g.
• The same person would launch the boats each time.