Several Oregon Steamboats are running biodiesel. Myles Twete, Portland, owner of his own 20 ft. steamboat says there is "No soot and little smoke to speak of. People love the smell of it burning."

Myles' steamboat, OLY, has been using biodiesel for a year now: http://www.pcez.com/~artemis/NWSSBoly.htm

Dave Bell's 26ft. steamboat, Captain Bell has been using biodiesel for 3 weeks: http://www.pcez.com/~artemis/NWSSBcap.htm

Dave Larson's 38.5ft steamboat "Tortoise" has been using biodiesel for 3 months: http://www.pcez.com/~artemis/NWSSBtor.htm