37 ft Duffy ready to be finished

[Cape Island Boats]

Here is the 37 ft Duffy Hull we have avaialble

 

[Helen L]

lot of trunk

 

[Cape Island Boats]

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

 

[Frank Grimes]

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

 

[Blitzen]

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.

 

[Cape Island Boats]

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.

 

[Cape Island Boats]

This is a 37 ft Duffy with the Cruiser top that we built

 

[F/V First Team]

Based on what weight?

 

[Cape Island Boats]

Based on previous projects that we have done

 

[F/V First Team]

What were the weights of those projects?

 

[Cape Island Boats]

Never had the vessels weighed just know how they performed at during sea trials

 

[F/V First Team]

If you had to wager a guess?

 

[Frank Grimes]

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.

 

[F/V First Team]

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

 

[Blitzen]

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]

"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]

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]

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??

 

[Blitzen]

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.

 

[F/V First Team]

The $5 is just for the weighing, the trip to the water is where the hauler makes their money, I stay out of it