I know there may be different types of cork, but let's take the "average" cork used for cork board, at say, 0.24gm/cm^3. Let's say you make a boat out of that cork. I understand that the weight of water displaced should be greater than the object's total weight (e.g. density of cork less than the 1 gm/cm^3 of density of water). If cork's density is 0.24gm/cm^3, will cork hold something about 4 times its weight = three times greater added? Is it just the weight density equation, where weight density = weight/volume, and as long as the total density (cork weight + object weight)/(cork volume + object volume in water) is equal to or less than the density of water it displaces, then the buoyant force will keep it afloat? < Can I add the weights and density like I show to get the total density? Thanks in advance!