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cambid said..sailingspoon said..
Owner just informed me its a 2ym15 yanmar which has 14 horse power.
Is this a deal breaker?
Don't know why anyone would use a 2YM15 in an S&S 34. Price and size/weight I guess, but a 3YM20 fits under the cockpit no problem. 14hp will move you along but you'll probably struggle to get much more than 6 knots out of it at max revs.
Agree.
You can't judge motoring speed in inshore conditions with the open ocean.
In the open ocean against a headwind of even 10-15 kts a S&S34 with a 20hp engine with well-matched prop will struggle to get 4.5kts through the water. A 25hp engine with a good prop should get at least a kt faster.
Cisco might recall that on our 2015 Lord Howe trip we had to motor for a great deal of time, often with a set against us of 1-2 kts. We struggled to make 4kts over the ground. At one stage Havefun and I thought if the wind didn't come back to help us we wouldn't make it to the island with any fuel remaining. As it turned out the wind returned and we sailed on. That was the longest of my three Lord Howe trips, by about a day. Previous trips I'd leave Tuesday middayish and arrive Friday afternoon/evening, that one we got there Saturday late.
With a 25hp engine we could have improved that SOG by 20% or more and saved 12 or so hours.
Based on my experience, a 15hp engine in an S&S34 would be a waste of time in open ocean conditions. Good for harbour and berthing operations only.