Geoff on Seyella had found some useful advice on the net suggesting that a tall chimney would help our diesel fire draw better. The recommended length of flue should be 10 feet from the flame which would mean 4 feet above the roof! We only have about 1 foot 6 inches so we can get under bridges. Many years ago I had made our chimney out of rolled up ‘liners’ with Vic’s help. The great advantage was a double skin to keep the gasses warm. That worked a treat most of the time. The ‘down draft preventer’ as supplied with the boat was simply not enough and was not much good in strong winds.
Our chimney fitting is only 3 ½ inches diameter so readymade chimneys were hard to find. When at Crick we had asked to have one made but the maker was reluctant to help because it was an oil fire. Midland Chandlers had a 28 inch chimney but although the inner liner measured 3 ½ inches it would not fit. So I have got a 28 inch liner which drops over the existing chimney. For use when we stop of course. Will let you know if it is better after a windy day!