Probably the most important maintenance task, careening is the process of checking the yachts hull. In few words, inspecting the hull for early signs of osmosis and applying practices to prevent it, checking if there are signs of corrosion on the metal parts and making sure that no sea organisms have settled on the hull’s surface. A hull that has been looked after will provide better performance for the yacht since it will increase its overall speed and reduce fuel consumption. Note that you’ll need to do the process of careening in harbour areas that take care of the residue. For toxic waste and paint residues make sure that after you collect them you drop them only at appropriate disposal points.
The more often an engine goes through maintenance and service, the better it performs by consuming less fuel and hence causing less pollution. It is advised to run complete maintenance once a year or every hundred hours of use. It’s also advised to prefer biodegradable synthetic oils since they are less damaging for the environment.