09/08/2026
Winterizing your Boat
Unfortunately it's getting closer to haul out time for boating on the Great Lakes. How will you handle prepping your boat for the winter months. Here are some of the many things you may want to consider.
Engine - one of the most important tasks preparing your engine and fuel system to avoid damage.Follow the manufacturer’s guidelines for winterization, which may include draining the engine coolant, changing the oil and filter, and adding a fuel stabilizer.
Electrical Systems - inspect all of the electrical connections, wires, and components for signs of wear, corrosion, or damage. Replace any worn-out or damaged parts and clean any corrosion using a wire brush or specialized electrical cleaner.
Batteries - inspect the battery for any signs of damage, leaks, or corrosion. Clean any corrosion using a mixture of baking soda and water. Test the battery’s voltage using a multimeter to ensure it is holding a charge. If your battery is older or not holding a charge as it should, it may be time for a replacement. If possible, remove batteries and secure them in a warm, dry place. Remember to remove small batteries from emergency lights, clocks, radios, etc so that they do not salt up.
Water Systems - drain all water tanks, including freshwater, wastewater, and livewell systems. Use compressed air to blow out any remaining water from the pipes and faucets. Follow the manufacturer’s instructions when winterizing specific components, such as the engine’s cooling system or water heater. Antifreeze may need to be added to these systems to protect against freezing temperatures.
Remove Electronics and Valuables - remove any electronics and valuables to protect them from theft. Many electronic devices are susceptible to moisture and extreme temperatures. For my boat, I remove and hang all my sailbags, inflatables and dock lines inside the cabin or in the garage to prevent any tempting treats for potential four legged varmints.
Documents - remove any paper documents that you might need for next years registration or you don't want to get damaged. Keep a list of the equipment you may have removed so that you have a checklist to prepare your boat for next years season.
These are just a few items to consider. Please share any of your own in the comments.
Photo of the USCG Cutter Morro Bay in the Cleveland harbor February 2010. Photo by Auxiliarist Ken Stroebel