The boat is now unsinkable

As per the mini class rule, minis must be made unsikable with dedicated hull volums filled up with unsikability foam.

We choose to put ultra low density foam (20kg/m3) instead of polystiren blocks. The advantage is to have a a foam that fills completely all the voids of the dedicated hull compartment.

Pretty impressive, you poor 500 grams of liquide and it turns into 25L of foam