How to winterise your motor boat

Jon Mendez explains the steps you need to take to ensure your boat stays in top condition for next season

- JON MENDEZ

Winter can be a great time to use your boat, but it’s also an opportunity to put it to bed for a few months and catch up with other things. Whatever you decide to do, a few simple steps will ensure it stays in good nick for the next time you use it.

Exterior

Whether stored or used, the outside will need to be cleaned and protected against wind, rain and snow. Wait for a dry day to wash it down and add a layer of polish to protect the GRP and stainless steel. The same goes for canopies; add an extra layer of waterproof sealant. If you don't intend to use the boat over winter, consider investing in an allover cover and, if staying afloat, add extra lines and anti-chafe measures.

Interior

The cockpit upholstery and interior are most prone to suffering from damp over winter, so if shore power is available, use a dehumidifier to remove moisture from the air and add a little warmth (just check with your insurer). Leave the cabin and bathroom doors open and try to locate it above a sink so it can self-drain. If shorepower is not available, moisture traps and desiccant bags are available - albeit with limited capacity - that don't need power.

Air circulation also helps prevent mildew, so try to encourage a flow of air through any enclosed spaces. I leave a porthole open and a skylight on a locked vent. Cushions and mattresses will also benefit from being propped up to maximise air circulation around them, or you can remove them from the boat and store them at home.

If your boat has air conditioning, it may have a winter dehumidifying mode; if not, then add tube heaters in key locations, preferably with builtin thermostats. They take the edge off the cold without using too much energy.