How to winterize your boat – step by step

Hur du vinterförvarar din båt – steg för steg

Proper winterization of your boat is crucial to ensure it's in top condition when the season begins again. Follow this step-by-step guide to protect your investment during the cold months.

🔍 Step 1 – Final trip and inspection

Take one last trip on the water and note any issues with the engine, steering, or hull. It's easier to remember what needs addressing when you've just experienced it. Make a note of everything that needs repairing over the winter.

💧 Step 2 – Drain all fluids

Drain cooling water from the engine to prevent frost damage. Change the engine oil – old oil contains acids that can damage the engine over the winter. Also, drain water tanks, toilet systems, and any pumps. Use antifreeze in systems that cannot be completely emptied.

⛽ Step 3 – Fuel system

Fill the tank to 90% and add fuel stabilizer to prevent fuel degradation. Run the engine for a few minutes to ensure the stabilizer reaches the entire system. Change the fuel filter if it wasn't done during the season.

⚡ Step 4 – Batteries and electrical system

Remove the batteries and store them in a cool, dry place. Connect them to a trickle charger over the winter. Check all electrical connections and apply corrosion protection to the contacts.

⚓ Step 5 – Hull and propeller

Lift the boat out of the water and thoroughly clean the hull. Check the propeller for damage and replace the anode if it's more than 50% consumed. Apply antifouling paint if the boat will be in the water next season.

🧹 Step 6 – Cleaning and drying

Clean the entire boat, inside and out. Allow everything to dry completely to prevent mold and mildew. Remove all textiles, cushions, and electronics that can be damaged by moisture and cold. Leave hatches and lockers open for good air circulation.

🛟 Step 7 – Safety equipment

Check the expiry dates on life jackets, distress signals, and fire extinguishers. Replace anything that has expired. Store equipment in a dry place indoors over the winter.

🔒 Step 8 – Covering and storage

Cover the boat with a breathable cover – avoid plastic sheeting that traps moisture. Ensure the cover is securely fastened so it doesn't blow off. Store the boat on a stable surface with support under the keel to prevent deformation.

📄 Step 9 – Documentation and insurance

Verify that your insurance covers winter storage. Photograph the boat's condition for documentation. Note all actions taken and what needs to be done before next season.

🌟 Tips for spring

Set a reminder in your calendar 4–6 weeks before the start of the season so you have time to make all preparations calmly. A well-winterized boat is a joy to launch in the spring!