Pot-bellied stoves on narrowboats > what is the mysterious environmental problem ?

Nowt wrong with using a wood stove on narrowboats/ barges, can't see the fuss, I actually know some folk with a narrowboat on the Leeds/Liverpool section of the c waterways up here in Lancs who swear by them, also many marinas and watering stations leave piles of wood for their use. And there is nowt wrong with tidying up the banksides as you go on your merry way.