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                The bilge pump system is fitted with a water lock on the hose. - 
                        Detach the hose and fully drain the water from the water lock and run the pumps dry. Otherwise the pumps may freeze and break. 
 
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                Unscrew the frost plug on the underside of the shower fittings. - 
                        If there is no frost plug, unscrew the shower hose. 
 
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                Drain the water tank and all other components containing water in order to avoid frost damage. 
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                Run the freshwater pump dry to drain out all the water. 
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                Make sure that no water remains in the boat under any circumstances. Leave the hatches in the cabin partially open.