I have already read the long post on Cat engine efficiency on this forum.
A lot of discussion was relevant to the CAT 22
Here's my situation.
Fishing grounds: Atlantic Ocean off Hatteras NC.
The boat will be a very plain jane fishing boat.
No extra amenities save 2 radios, gps, fish finder (with thru-hull).
2 or 3 12 volt batteries.
On a normal day offshore there will be 2 people and perhaps 100lbs of ice + tackle.
Hopefully fish will be added . 100lbs +- typically.
My usual roundtrip mileage (running and trolling) is about 100 miles (max 140) so whatever fuel tankage required.
Weather permitting I would like to be able to cruise at about 20-25 knots (4-4500 rpm) with a WOT speed of around 30 knots.
Knots not mph.
What size engine would you recommend?
How much tankage ?
Economy is important. I could give up a knot or two at either the cruise or WOT.
I would like to put an aluminum tube t-top center console. I can purchase that locally.
Can you estimate interior width (inside the gunnels) I can figure what size console I am looking at.
I'm assuming aft of midpoint.
Want to make sure people can move around the console forward and aft.
I would like to put the fishbox forward.
I'm considering purchasing the CNC Jig Kit.
I have not built any of your boats but have built 1 rowboat (lapstrake and carvel) and a simmond sea skiff(plywood on frames).
I am a competent woodworker but far from a glass expert.
I do have access to a very good fiberglass person. He even owes me money.
I read this boat is not for a first time builder.
Should I be worried?
Thanks
Cat 22
Re: Cat 22
I suppose this is about our CT22.
A pair of 135 HP would be great. 90's would be OK but they are about the same weight.
You have about 78" width available where the console sits. Th console I show in the design is 30" wide. There is plenty of room.
The boat not complicated to build but it is a big job: two hulls to fabricate and fair plus an elaborate cockpit.
With a kit, no fitting or measurement problems. The basic boat will come together fats. It's the finish that will take time.
A pair of 135 HP would be great. 90's would be OK but they are about the same weight.
You have about 78" width available where the console sits. Th console I show in the design is 30" wide. There is plenty of room.
The boat not complicated to build but it is a big job: two hulls to fabricate and fair plus an elaborate cockpit.
With a kit, no fitting or measurement problems. The basic boat will come together fats. It's the finish that will take time.
Jacques Mertens - Designer
http://boatbuildercentral.com
http://boatbuildercentral.com
Re: Cat 22
I guess I was hoping 50's or 70's would hit my numbers
A pair of 115 yamaha 4 strokes are probably near 20 grand.
That's a stretch for me.
What performance (cruise/WOT in knots) could I expect from
50hp
70hp
Sounds like there is plenty of beam for the console I would want.
When you say finishing - are you mostly referring to sanding/fairing fiberglass?
A pair of 115 yamaha 4 strokes are probably near 20 grand.
That's a stretch for me.
What performance (cruise/WOT in knots) could I expect from
50hp
70hp
Sounds like there is plenty of beam for the console I would want.
When you say finishing - are you mostly referring to sanding/fairing fiberglass?
Re: Cat 22
If you want 30 knots (35 mph), you need more HP than a pair of 50' or 70's.
Finishing is everything you do once the hull is complete: fairing, painting, rigging outboards, electricity. deck hardware etc.
Finishing is everything you do once the hull is complete: fairing, painting, rigging outboards, electricity. deck hardware etc.
Jacques Mertens - Designer
http://boatbuildercentral.com
http://boatbuildercentral.com
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