What happens to the magnitude of the fluid friction acting on a submarine as the submarine?

As a submarine moves through water, the magnitude of fluid friction, or drag, increases with speed due to the turbulent flow of water around its hull. At low speeds, the drag is primarily laminar and lower, but as the submarine accelerates, the flow becomes turbulent, leading to greater resistance. Additionally, factors such as the shape of the submarine and its surface roughness also influence the overall drag experienced. Thus, as the submarine increases its velocity, the fluid friction acting on it tends to increase significantly.