That question has no answer, because I don't own a boat. But regarding
any boat in general, if the boat is afloat, then its density is less than 1.0 .
According to Archimedes' Principle (which he described in his treatise On Floating Bodies) a body immersed in a fluid experiences a buoyant force equal to the weight of the fluid it displaces. In the case of a floating boat, if the average density of the boat and the air within its hull is less than the density of the water, the mass of the water displaced as it settles into the water will be equal to the to the total mass of the boat but it will displace a volume less than the volume of the boat, thus enough of the boat will remain above the water to allow it to float.
When the density of entire assembly (boat, peoples, products, equipments, water etc.) has a density greater then the water density the boat is sinking.
The boat floats because the entire boat - including any air contained within - has a total density less than the density of the water.
If a boat with too much cargo is sinking, it means the combined density of the boat and cargo is greater than the density of water. Water has a density of 1 g/cm^3, so anything with a greater density will sink. To stay afloat, an object must have a density less than that of water.
the boat has equal or less density than the water. :P
I don't understand what you're asking, so I'll reply based on the literal meaning of your question. One way to change the overall density of a boat is to take it apart and make it out of a material with a different density. You could just add ballast or cargo.
The moon's average density is about the same as the density of mantle of the Earth.
d=m/v
Indeed yes. Density is defined as mass per unit volume. If all the mass were concentrated in one lump, your boat would no longer float. If the metal walls of the boat were a little thinner, you'd have more boat volume, and lower density.
That depends on how much gargo it's carrying. But if it's floating, then its density is less than 1.0 .
A hollow boat made of plasticine will float because the overall density of the boat is lower than the density of water. The buoyant force acting on the boat is greater than its weight, allowing it to float on the water's surface.
The average density of an object determines its buoyancy. If the average density of an object is less than the density of the fluid it is in, it will float. If the average density is greater, it will sink. Buoyancy relies on the difference in densities between the object and the fluid.