As the temperatures drop and the boating season winds down, it’s tempting to tuck your boat away and forget about it until spring. But winterising your boat properly now can save you serious headaches - and money - later. From protecting your engine to preventing damp and mould, the right products make all the difference.
If you're a Morgan Marine local, we can winterise your boat - but for everyone else, here’s our guide to the top winterisation essentials that every boat owner should consider.
1. Engine Antifreeze and Coolant
Even if your engine is out of the water, trapped water in the cooling system can freeze and cause cracks. Using a high-quality marine engine antifreeze protects your engine during freezing temperatures. Look for products designed specifically for your engine type, whether outboard, inboard, or sterndrive.
Pro tip: Flush your engine with fresh water first, then circulate antifreeze before storage.
2. Fuel Stabiliser
Old fuel can gum up your engine over the winter months, leading to poor starts in spring - or worse, expensive repairs. A fuel stabiliser keeps petrol or diesel fresh and prevents buildup.
Pro tip: Fill the tank before adding stabiliser to reduce condensation inside your fuel tank.
3. Battery Care
A dead battery is a common springtime surprise. Marine battery chargers and trickle chargers keep batteries topped up without overcharging. For lithium or AGM batteries, make sure your charger is compatible.
Pro tip: Disconnect your battery if you won’t be using your boat for several months, but keep it on a maintenance charger.
4. Moisture Absorbers and Anti-Mould Products
Condensation can ruin upholstery, carpets, and electronics. Moisture absorbers, dehumidifiers, and anti-mould sprays help keep the interior dry and fresh throughout the winter.
Pro tip: Ventilate your cabin slightly to allow airflow - sealed humidity is the enemy.
Buy Moisture Absorber
Buy Mould Remover
5. Covers and Tarpaulins
A robust boat cover or winter tarp is your first line of defence against rain, snow, and debris. Choose one that fits snugly and is breathable to prevent trapped moisture.
Pro tip: Secure covers with straps or clips and check them periodically for wear.
6. Propeller and Hull Protection
Don’t forget the parts that stay submerged. Propeller grease and hull protectants prevent corrosion and fouling while your boat rests. A little prep now keeps your hull smooth and shiny for launch day.
Pro tip: Apply a protective coat and inspect zincs or anodes - replace them if worn.
7. General Maintenance Essentials
Even in winter, small tasks make a huge difference:
-
Lubricate hinges, latches, and steering cables
-
Check and top up fluids
-
Inspect ropes, fenders, and mooring lines
Final Thoughts
Winterising your boat isn’t just about preventing damage - it’s about giving yourself peace of mind. With the right products, a little time, and some simple steps, your boat will be ready to hit the water the moment spring arrives.
For a full range of winterisation products and expert advice, check out our online store, Morgan Marine Chandlery, shipping across the UK with next day delivery available.
