De-winterizing a boat water system is part of proper boating maintenance. Boats without proper winterizing should have their fuel tank serviced, oil changed, and their spark plugs inspected for deterioration. Having the fuel tank serviced will ensure that there is no buildup of salt in the fuel lines, which could cause serious problems.
After the fuel tank is serviced, the next step to take when it comes to de-wetting a boat is to have the water system checked over thoroughly. Make sure that all of the pipes, hoses, and fittings are not affected by rust and algae. Also check over the pressure lines to ensure that they are not leaking. It is also important to check over the water lines coming into the water system to make sure that they are clear and running correctly. If there are any leaks, it is imperative that you repair them as soon as possible. Leaks can be very dangerous and costly to fix if they are not properly fixed.
Another step when it comes to de-winterizing a boat water system is making sure that the transom, bow eye, and inboard navigation lights are working properly. The transom is the window on the stern that the boater looks through. If these lights are not operating properly, it is essential that you get them fixed immediately. Flicking them off and on often causes mistakes and accidents.
If you have an oil-filled water system, there is a chance that the pressure may be low. In this case, you will need to add an oil treatment to the water. Boats that have an oil-filled transom should always have an oil tank near by in case of emergency.
An inboard water system, on the other hand, does not have an oil tank. It is drained of its oil during the winter season in order to prevent it from freezing up. If you drain the oil, you can greatly extend the life of your boat. However, drains should always be drained regardless of whether or not the system is working. This is because corroded pipes can cause all kinds of leaks, especially around bow eyes.
You may also want to consider de-planing your boat. This is done by removing the planking on the bow of the boat and filling it with dehumidified water. De-planing will remove much of the salt air from the surface of the water, which makes it run much cooler. It will also make the boat feel much smoother to handle. If you do not de-planse your boat, it will likely develop a layer of salt that will begin to buildup on the insides of the engine, transmission, and other crucial parts.