The upward force experienced by the fluid on the body or the object when an object is inserted or immersed in the fluid is called Buoyancy.
The point where the force of Buoyancy is exerted or the point on the body where the force acts is called the Center of Buoyancy.It should be noted that the force of buoyancy is a vertical force and hence the Center of Buoyancy is the point located on the center of the gravity of the liquid that is being actually displaced by the object immersed.
Buoyancy Force can be expressed as:
F_b = g * ρ*V
F_b = force of buoyancy in Newton,
g = acceleration due to gravity,
ρ = density of the fluid,
V = volume of the object inserted into the fluid.
