Cat 22

Questions and Answers about the Woods Designs, multihulls and others.
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mrgeeze
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Cat 22

Post by mrgeeze » Thu Sep 01, 2016 3:01 pm

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



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jacquesmm
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Re: Cat 22

Post by jacquesmm » Thu Sep 01, 2016 5:24 pm

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.
Jacques Mertens - Designer
http://bateau.com

mrgeeze
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Re: Cat 22

Post by mrgeeze » Fri Sep 02, 2016 10:12 am

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?

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jacquesmm
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Re: Cat 22

Post by jacquesmm » Fri Sep 02, 2016 10:29 am

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.
Jacques Mertens - Designer
http://bateau.com

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