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Old 04-09-2008, 20:17   #1
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Recommended Outboard size?

I just purchased my first sailboat, a 22' 1972 South Coast Seacraft, in great condition. Have an andjustable outboard bracket in the back and wondering which size outboard motor I should purchase (and expect what kind of speed with the motor?) Thanks for any help you can offer.
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Old 04-09-2008, 20:41   #2
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Nissan or tohatsu 3.5 hp.
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Old 04-09-2008, 21:28   #3
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Theoretical hull speed 1.34 times the square root of the WATERLINE length

Probably six knots...give or take a tenth
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Old 04-09-2008, 21:29   #4
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I agree 3 to 4 hp will be more then enough for this boat.

Many folks overestimate the hp required to move a sailboat, some even argue that more hp to 'buck a current' is good... Problem is that hull speed is hull speed... if you are bucking a 2 knot current with a 5 knot hull speed.. you are not going to go much over 3 knots.

I see lots of overpowerd boats dragging their stern for the extra weight..
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Old 04-09-2008, 22:18   #5
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I agree with the recommendations. Get a light weight outboard up to 5hp. I had a 6hp Johnson on a Catalina 22 and it was way more than enough.
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Old 05-09-2008, 00:31   #6
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I had a 3.5 hp for the first few years on my 2000lb Sirius 22. It proved to be adequate but I was always Tail End Charlie when I would cruise in company with friends with larger motors. We covered large portions of the Great Lakes and sometimes motored long distances. I eventually replaced it with a older 7.5 mainly for the reason that the 3.5 was an unreliable piece of crap though it was new. The 7.5 is more than enough so I would go with 5-6 hp if you sometimes have to motor longer distance. If you are just daysailing and need to get in an out of the marina a 3.5 would be fine.
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Old 05-09-2008, 05:14   #7
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I think I'd go with a 5 hp. I had an ODay 222 with a 6 hp, which was more than adequate. The recommendations for 3.5-4 hp are probably good for most conditions, but I you're caught out in a blow and trying to make way against strong winds, you'll appreciate a little extra oomph.
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Old 05-09-2008, 06:09   #8
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While heavier, it would be better to use about a 5 hp with a reverse gear--some of the 3.5 hp engines only have neutral and forward.
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Old 05-09-2008, 06:33   #9
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Thank you all so much for your help. All information is greatly appriciated!
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Old 05-09-2008, 13:19   #10
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While heavier, it would be better to use about a 5 hp with a reverse gear--some of the 3.5 hp engines only have neutral and forward.
Good advice. My 3.5 was like that. It was a PITA. A few times the prop had a "disagreement" with the rudder when I had to swing it around to get reverse.
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