Not quite so, on two strokes and electric.
1. Two strokes are still made that satisfy the environmental standards of today - particularly the Evinrude E-Tec series, which "has cleaner exhaust emissions than a 4-stroke, it produces 5 to 10 times less Carbon Monoxide (CO) while idling or trolling." (according to Evinrude). Used by the Coast Guard, Marines, Seals, et. al. 2. The energy for an electric propulsion system has to come from somewhere, no? It's not magic. I assume most sailors would run their main propulsion engine to charge the outboard electric's batts as well as the house batts - at much lower caloric efficiency and much more pollution per dingy mile traveled than any 2-stroke. Think about it. And the batteries themselves are big sources of environmental pollution, and have a very short life, in the total scheme of things. Think lead, and sulfuric acid. 3. The Seagull. Do your anchorage and mooring field neighbors a favor and toss that primitive noise-maker into the drink, and get a modern, quiet outboard. Those things are a pain in the ear - on what would otherwise be a nice, quiet morning on the water, except for some smug, pipe-smoking, granola eating Luddite insisting on making 1/2 knot against the current in his hard dinghy with the outboard with all the moving parts on the outside.
1. Two strokes are still made that satisfy the environmental standards of today - particularly the Evinrude E-Tec series, which "has cleaner exhaust emissions than a 4-stroke, it produces 5 to 10 times less Carbon Monoxide (CO) while idling or trolling." (according to Evinrude). Used by the Coast Guard, Marines, Seals, et. al. 2. The energy for an electric propulsion system has to come from somewhere, no? It's not magic. I assume most sailors would run their main propulsion engine to charge the outboard electric's batts as well as the house batts - at much lower caloric efficiency and much more pollution per dingy mile traveled than any 2-stroke. Think about it. And the batteries themselves are big sources of environmental pollution, and have a very short life, in the total scheme of things. Think lead, and sulfuric acid. 3. The Seagull. Do your anchorage and mooring field neighbors a favor and toss that primitive noise-maker into the drink, and get a modern, quiet outboard. Those things are a pain in the ear - on what would otherwise be a nice, quiet morning on the water, except for some smug, pipe-smoking, granola eating Luddite insisting on making 1/2 knot against the current in his hard dinghy with the outboard with all the moving parts on the outside.