37 ft Duffy ready to be finished

Cape Island Boats

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This is molded with the Cruiser top can be easily modified. If you visit our website Capeislandboats.com the Hooked On also has the cruiser top. The Sandy B and the Lucky Lady II have the modified work boat top
 

Blitzen

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What's a good power choice to get a solid 23-24kt cruise out of that hull?

Depending on how you plan on finishing the boat will make a big difference but finished as a tuna boat with no flybridge you will need 650+HP if you keep it light.
 
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Cape Island Boats

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We suggest a Cummins QSM11 rated for 715 HP would achieve the speed you are looking. We have also put a C12 Caterpillar and that would also get the speed you are looking for just a much heavier and pricier engine.
 

Frank Grimes

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We suggest a Cummins QSM11 rated for 715 HP would achieve the speed you are looking. We have also put a C12 Caterpillar and that would also get the speed you are looking for just a much heavier and pricier engine.

The dry weight of the two engines is almost identical, in fact I think the C12 is a few lbs less than the QSM. At least, if you believe the literature each company publishes. I don't doubt the pricing diff.
 

Blitzen

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I meant finished weight of the vessels
I don't know why more finishers don't weigh their work

Well we know why, it costs more money and I am sure that most have a good idea, but I agree that more accurate numbers could help fine tune the building process.
 

Powderpro

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"Hooked On" looks fairly plush and heavy to me, the stern is sitting a little low in the picture. I would think a more basic 37' Duffy (lighter) could cruise at 20-21 knots with a 500 hp 8.3 Cummins.

It seems to me that the Duffy would be a pretty efficient hull, I like the chine design, bow design, and from what I've heard, it delivers a soft, comfortable ride in the chop.
 

F/V First Team

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Usually when we weigh a boat it is for the massive sum of $0.00
The most we've ever spent is $5.00 to weigh a vessel on the trailer, then the empty trailer is weighed for no fee.
Not exactly a deal breaker as far as price goes
 

Powderpro

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First Team- In your opinion, what would the approximate weight RANGE of say a 38' Northern Bay basic lobster boat with one of your Sisu engines? Not a race boat, but your average 38' lobster work boat. No fuel, no personal gear. 16,000 lbs - 17,000 lbs??
 
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Blitzen

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Usually when we weigh a boat it is for the massive sum of $0.00
The most we've ever spent is $5.00 to weigh a vessel on the trailer, then the empty trailer is weighed for no fee.
Not exactly a deal breaker as far as price goes

You are lucky to be able to do that, for me to put a boat on a trailer have it towed to a scale and then towed to wherever is going to cost at least $400. You have no excuse not to weigh your boats for the owners.
 
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