At Mercury, the Ohio Players enjoyed their greatest success; not only did their sound coalesce, but they became notorious for their sexually provocative LP covers, a tradition begun during their Westbound tenure.
Objects float when the volume of water they displace is less than the volume of the objects themselves. When objects sink, the volume of water they displace is greater than the volume of the object. The principle may seem relatively simple: Light objects float and heavy objects sink.
The buoyancy force is equal to the volume of water it displaces multiplied by 62.4 lbs. per cubic foot (the density of water). So if the boat displaces 20 cubic feet of water with it's hull or shape it can hold 20 x 62.4 = 1248 lbs. of self weight plus cargo. Obviously there should be a factor of safety on that.  In summary, a boat needs two things to float on water: Gravity and buoyancy force.