LewZ, perhaps powered by a LiPO?? A lot of stuff nowadays can be "cordless" thanks to lipo batteries.

I've seen some of these ultrasonic vaporizers, especially in doctors offices. I guess that battery operated as I did not see any wiring. They seem to be lasting quite a bit, and the best part is "they don't stink".

Lew

DavidE, these are same technology as the ultrasonic home humidifiers. The white smoke is just a very fine mist of distilled water. I purchased several transducers, and a couple of ultrasonic driver boards from various Amazon vendors, they were all very disappointing...either difficult to get started, or not running very long, or ran once or twice for a very short time then quit. As I posted earlier, Garth at Confederation over in Burlington an hour west of us had one working literally for hours & hours on static display. I gave up on those, currently looking into the hot resistors that vaporize vegan glycerin on a fiberglas wick, glycerin which I got off Amazon.

And a $50 vaping unit , I bought a vape canister that has NO nicotine

You can get some smoke generators which use water
They throw out a lot of white smoke

Try ebay search which should throw up some results
I think howes might do one as well

Regards
Dave

Sorry I didn’t mention the fuel. I’m assuming you’re asking about the fluid in the heating chamber. There are many brand’s available so source one near you. Oil based products smoke very well when heated. Remember that a wick needs to be wrapped around the heating coil to soak up the oil. I used glass fibre rope for that purpose (ex steam engine supplies)
I hope this helps

Jav... What do you use as "fuel"? Lew

Hi Rod
I’m scratch building a WW2 Destroyer for which I have constructed a home built smoke generator. The model is 1/60th scale so there is plenty of room in the hull just below the funnel. I used a shallow glass jar with metal screw lid. The heating coil came from an old electric heat gun, some other heating elements should work just the same. I use 3s lipo batteries connected via an ESC to the heating coil. You will need to work out by trial and error how long your heating coil needs to be without over heating to match your power supply. A resistor may be needed to limit the power drawn from your supply. A small electric fan provides air flow and blows smoke out the funnel. I get as much as I need and it can be varied by controlling the esc via rc. Just scale things down for smaller boats.
Good luck and make smoke.

AdBlue is a brand name for products and services related to exhaust aftertreatment in diesel engines using selective catalytic reduction (SCR). This exhaust aftertreatment enables a reduction of emitted nitrogen oxides (NOx) by up to 97 percent.The aqueous urea solution required for this process is standardized in ISO 22241 as AUS 32.

I found that on Wikipedia. It's still allowed here.

It's the same as DEF.

Is AdBlue the same as DEF fluid? Over here the Americans are now allowing it NOT to be used to reduce the costs for farmers...remove the costly sensor

Hello Rod, the number of electric cars is slowly increasing. For trucks, AdBlue is mixed into the diesel fuel. This reduces emissions. Otherwise, the trend for electric trucks is also moving towards electric vehicles.