The End of the Season Ashore

There is a particular quiet that settles over UK coastal towns when the last of the summer sailors haul their boats up the slipway. The gulls still cry, the tide still turns, but the marina car park empties and the chandlery shelves grow sparse. For those of us who keep a small sailing boat ashore through the winter, this is a familiar ritual. It is not simply about protecting your investment; it is about honouring the boat that gave you long evenings drifting past the harbour wall and brisk reaches across the bay. Winterising a small sailing boat ashore is a practical craft, honed by salty experience. Do it well, and spring will greet you with a vessel that is ready to splash, rather than one that demands expensive repairs.

Flushing the Outboard and Fuel System

Your outboard has spent the season breathing salt air and working hard against the tide. Before you tuck it away, flush it thoroughly with fresh water. Use a set of ear muffs or a flushing bag, run the engine for several minutes until the tell-tale stream runs clear, then stop it. While the engine is still warm, drain the carburettor bowl and add a fuel stabiliser to the tank if you are leaving petrol in it. Better still, run the engine dry of fuel if your manual permits. Remove the spark plugs, squirt a little fogging oil into each cylinder, and turn the flywheel a few times by hand. Refit the plugs loosely. Change the lower unit oil now, checking for any milky emulsion that signals a failed seal. A few drops of water-displacing oil on the throttle and gear linkages will keep them free. Finally, store the outboard upright, not on its side, to prevent oil pooling where it should not.

• Flush with fresh water until the tell-tale runs clear.
• Drain the carburettor and treat or drain the fuel.
• Fog the cylinders and change the lower unit oil.
• Store upright, covered, and away from damp concrete.

Draining Freshwater Systems and Beating Mould

Freshwater systems are the hidden enemy of winter. Any water left in pipes, tanks, or pumps can freeze, expand, and split. Open every tap and drain the tank completely. If you have a water heater, bypass it or drain it according to the maker's instructions. Then pour a non-toxic antifreeze (the kind used for caravan systems) into the tank and run the pump until it comes out of every tap, including the shower head if you have one. Leave the taps open. For the heads, pump through antifreeze and leave the seacocks closed. Mould is the other coastal curse. Remove all cushions, sails, and soft furnishings. Wash and dry them thoroughly before storing them at home. Leave locker doors and floorboards propped open to allow air to circulate. A couple of moisture-absorbing tubs placed in the cabin will help, but they are no substitute for ventilation. If you can, crack a hatch or vent slightly, secured against rain.

Covering the Cockpit and Protecting the Deck

The cockpit is a magnet for autumn leaves, rain, and the green algae that loves a damp corner. A good cover is essential, but it must breathe. A cheap tarpaulin that traps condensation will do more harm than good, encouraging mould and rust. Invest in a breathable cockpit cover, or make one from a breathable fabric. Prop it up in the middle with a wooden batten or a fender so that rainwater runs off rather than pooling. Check that your scuppers are clear and that the cockpit drains freely. Halyards should be slackened slightly, but not left to slap. Remove sails, wash them, and store them dry. If you leave a sail on the boom, cover it with a breathable sail cover and ensure it is not chafing. Take down the ensign and any flags. A wipe of the deck with fresh water and a soft brush will remove salt and bird lime before it etches the gelcoat.

Trailer Care: Rust Never Sleeps

If your boat sits on a trailer, that trailer deserves as much attention as the hull. Coastal launching is brutal on steel. After every dip in the sea, and certainly before winter storage, wash the trailer thoroughly with fresh water, paying special attention to the axle, springs, and brake drums. Inspect for rust. Surface rust can be wire-brushed and treated with a rust converter, then painted. Deep rust or flaking metal means a trip to a specialist. Grease the wheel bearings and check the seals. Tyres should be inflated to the recommended pressure and, ideally, taken off the ground or rotated occasionally to avoid flat spots. Check the lights, wiring, and breakaway cable. A jockey wheel that has seized is a misery on a cold morning. Store the trailer on a hard standing, not grass, and if possible, chock it so the weight is off the tyres. A light oil on the coupling and a cover over the winch will pay dividends.

A Last Walk Around Before You Leave

Before you walk away for the winter, do one final circuit. Remove the battery and store it somewhere cool and dry, charged and topped up. A trickle charger is ideal if you have power. Check that mooring lines or tie-downs are secure but not so tight that they strain the hull. Leave a note of your contact details with the yard or a neighbouring boat owner. If you can, visit once a month. A quick check for chafing, water ingress, or a loosened cover takes ten minutes and can save a fortune. There is a quiet pleasure in these winter visits, too. The seaside town feels different out of season: the chip shop closed, the beach empty, the light low and silver. You are part of that rhythm now, a custodian of a small boat waiting for the next warm breeze. Winterising is not an end; it is a promise to the spring.