Excellent to see this, as merchants were often detected by this by good watch crews,,....for the warships, later in war, erzatz fuels, or poor quality would make them more visible at times or depending on how long between cleaning boilers, and or stacks.... but overall an excellent idea IMHO. One of the nagging worries of convoy commodores, i saw many refernces to this in my grandfather's log book, he was convoy commodore..... having to signal ships to make less smoke
great addtion to the immersion , thanks for this work.