Originally Posted by ocean
Will twin 135 Lehmans on my 38 ocean Alexander burn a lot more fuel than a single diesel engine I normally run them at 1600 rpm or 7 Nts
I agree w jleonard but maybe a little less fuel at about 1.5 times as much. But the engines will be much less loaded using about 40hp out of 240hp.
The archives are full of threads on both issues but the more we talk about either issue the less important it seems.
But it's obvious if you want to go 7 knots and occasionally 8 the single is better until it quits.
A boat like that in my stable would have twin 55hp engines.