Not really. Oil injection might make it possible to install on a 2cycle outboard, but propane doesn't really lend itself to boating in general IMHO. I worked at a large propane dealer in Fla back during the 70s "gas shortage" where we did a lot of propane auto/truck conversions. I was always impressed by the incredible durability they got from those vehicles. the oil changes looked like new oil after many thousands of miles also. but as far as boating, I'll stick with distilled dinosaur juice.