When we're sailing and using the wind, we are harnessing the power of nature, literally, to move our boats. But sometimes we need to turn on our engines to get out of the marina, avoid a dangerous obstacle, or move against the wind. One way to reduce your carbon emissions is to fuel your boat with either biodiesel or Straight Vegetable Oil (SVO):

• Biodiesel-This usually is a mixture of both biodiesel and traditional diesel labeled 80/20 (80% diesel, 20% biodiesel), 50/50, 20/80 or as B20 (20% biodiesel), B50, B100, etc. Biodiesel can be added to any diesel engine without any modifications. Burning it contributes a net of zero carbon emissions to the atmosphere, as the carbon emitted is merely that which was consumed by the plant as it was grown.
• Straight Vegetable Oil-Instead of growing plants solely for fuel, SVO reuses the by-products of restaurants (fryer grease and others) and recycles it to power an engine. With a few simple conversions the Green Grease Monkeys can make sure your boat runs cleanly and easily on this alternative fuel. You can also do
  it yourself!
• Low Sulfur Diesel-in cases where both SVO and biodiesel are unavailable, you should fuel on the most energy efficient, low-sulfur diesel available.