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  1. I have been researching expecting cruise speed/rpm/GPH numbers of chaparral 260 Signatures of my vintage and I don't know if the numbers I am getting are normal. I have a Volvo Penta 5.7 GI and volvo duo prop. The engine is brand new from 2019 and has about 23 hours on it. Last time out, 1 ft waves in Boston harbor, 10knt wind across the bow from port to starboard. 3400 RPM - Barely on plane 3600 RPM - 18kts 3800 RPM - 20kts 4000 RPM - 21-22Kts The boat has fresh bottom paint but it does look like it could have been sanded better before painting (purchased it 2 months ago). From other threads I have seen and from other research, I would expect to see a few more kts/hr with my boat/engine/drive combo? NOTE: These numbers were taking with 1/2 tank fuel, 1/2 tank water and 4 adult men on board.
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