When you neglect to perform hull cleaning, the boat is said to slow down and doing maneuver will also become a hard thing. Leaving all the other things, hull cleaning can be considered as the important task in underwater boat maintenance. Fouling will be developed over time and this eventually increases the friction in the boat. This can be held as the reason for slowing down of the boat. During hull cleaning the fouling will be removed and it not an easy task to perform. To know more, visit https://underwaterdivingblog.wordpress.com/2018/02/16/what-is-hull-cleaning-during-underwater-maintenance/