Tips on Winterizing Your Boat

Fall is upon us. The days are getting shorter and for many boaters the chill in the air marks the end of the boating season. You may be winding down and taking steps to winterize your boat. Even if you are lucky enough to enjoy your boat year-round, fall is the ideal time to take care of annual maintenance of all your boat systems. Time and money spent now will pay off by keeping your boat in prime condition and protecting it from potentially harsh winter damage. Keep in mind that many insurance companies won't cover damage caused by lack of maintenance. Plus, the more you do now to maintain your boat, the sooner you will be underway when warm weather returns!

There are many resources available for creating a customized winterization checklist. The first place is to consult is your owner's manual for any specific requirements. Some maintenance steps will vary depending on the types of systems on your boat and where to keep it. In the very simplest terms the goal is to prevent freezing water and corrosion.

The following list is not all inclusive but will give you an idea of areas to consider when winterizing your boat or performing seasonal maintenance. For step-by-step instructions refer to the various resources found in Boat Improvements and Maintenance.

Exterior

• Pressure wash hull and deck
• Clean all hardware, mast and rigging to remove saltwater and dirt
• Inspect hull and deck for any cracks • Inspect lifelines, mast, rigging and any other hardware (furling systems, winches, blocks, clutches, etc.) for signs of damage. Lubricate if necessary.
• Apply fresh coat of wax to any fiberglass surfaces • Inspect and touchup any brightwork
• Remove and inspect the prop
• Clean and grease the propeller shaft • Replace zincs if more than 50% gone

Engine (Diesel Inboard)

• Drain the oil while the engine is warm, change all oil filters and fill the engine with fresh oil • Run the engine again to check the oil pressure and ensure there are no leaks at the filter
• Change transmission fluid • Drain and back flush the raw water cooling system with fresh water
• Circulate antifreeze throughout the raw water cooling system
• Apply fogging oil to reduce corrosion of internal components
• Check for loose or broken clamps and fasteners
• Check hoses for cracks and wear and tear - replace if necessary
• Remove raw water impeller and store it (devise a reminder that it isn't installed)
• Seal off all air intakes, vents and exhaust outlets with plastic seals

Fuel Systems

• Top off fuel tanks with fuel to prevent of condensation
• Add fuel stabilizer to fuel tanks - run the engine to ensure stabilizer is well mixed
• Inspect all fuel lines, pump and filters for leaks and damage
• Remove all portable fuel tanks (don't forget propane) and store in a safe, well-ventilated area

Batteries & Electrical

• Disconnect batteries from the charger and store them in a cool, dry location off the ground
• Try to charge batteries once a month
• Inspect all wiring and connections

Freshwater System & Head

• Drain all hoses and water tanks
• Clean tanks and leave empty
• Pump out holding tank and flush with fresh water several times
• Close head intake seacock
• Replace all water in the bowl and hoses with anti-freeze

Interior

• Clean and dry out the bilge
• Install a dehumidifier in cabins to prevent mildew growth
• Remove all loose gear and the contents of storage lockers (especially food)
• Scrub the ice box/fridge and leave door open for air circulation
• Leave all locker doors open for circulation

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