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post #13 of Old 06-30-2013
downeast450
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Re: Atomic 4

We have an A-4. Simple, reliable, relatively quiet and safe. Our boat has a 20 gal fuel tank. The engine pushes the boat at about 5.5 knots, with no sails up, burning 3/4 of a gallon per hour. (With sails up we can cut the fuel consumption in half and still have the advantages we were running the engine for.) These are rough averages and are on the conservative side. That gives us about 30 hours of motoring with a 10% (reserve) on a full tank of gas. There are seasons we don't use the engine 30 hours for the entire season. It is a sail boat? Granted cruising in remote places we carry another 10 gallons of fuel. It has never been necessary to rely on that 10 gallons. We use it up if we need to top off the tank but that has always been instead of making the effort to buy gas along the way. Gasoline is available everywhere! So. With a little motor sailing thrown in and a couple of 5 gallon jugs we have an effective cruising range of 200 to 300 miles. It isn't a particular handicap for us when it comes to cruising range. I have never motored for 30 straight hours with no sails on our boat. Delivering another boat where the schedule is paramount it isn't unheard of.

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Islander-28, Marshall Sandpiper

Last edited by downeast450; 06-30-2013 at 02:15 PM.
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