New engine, only done 100 hours over 2 years. Yanmar 3ym30 IRRC. Generally do 2-2500 revs with around 5kts, which is very smooth & quiet. But like to exceed 3000 from time to time to prevent glazing and have done 3300-3400 for several hours to beat tide gates. The grill pan rattles a bit but it drives her well.
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