MZMadison wrote:
What looks like white and gray smoke is actually vapor from excess steam being released by the safety valve which lifts to prevent excess steam pressure in the boiler and a possible explosion. A good fireman can prevent this from happening as it wastes fuel and water but in this case I suspect it was created on purpose for the photographer(s).
Yes may have been for the photographers . No denying they do make lots of smoke , steam , blow the whistles a lot but when you pay good money for the trip you want a good show !