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Author	Topic:   volvo duoprop sizing on 22ft whaler
bob jacobs	posted 09-01-2002 05:56 PM ET (US)         I have a '75 22 ft commercial whaler formerly used by the Coast Guard. It probably has some water in the hull which makes it extra heavy. It came with a 5.7 litre GL with B-7 duoprop, which is the most pitch the B series comes in. I can't get to 4200 rpms with WOT and am looking for some guidance in selecting a more suitable prop. thanks

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