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Old 12-11-2006, 04:38 AM
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Default 20 foot Power Cat - with jet power?

Good morning guys.

I am in the market for a power cat and sadly my budget does not allow me to buy new [or even close]so I am hoping to find a older boat that needs repowering [out with the 2's and in with the 4's]

I am expecting to be towing it so as much as I would likea 23 footer, it would be too heavy for me to tow [Landcruiser Prado 120], so I am limited to 20 foot boats.

I am just begining to look around.

I noticed an advert in the paper yesterday for a Sharkcat, the ad reads:

"Sharkcat 6m [20ft for you guys ], stripped down for rebuild, twin jet units, tandem trailer AUD$5000 [ US$6500] as is."

I have not enquired about the vessel as yet, and don't know if the motors are stripped down or the entire boat

My questions are:

Is a jet powered cat a "good" thing? And why /why not?

I would presume that the engines would be mounted inside the sponsons? Depending on their exact location this could be good for "balance", I would assume.

Oh one more thing, can anyone advise about the fitting of the THT shirts? I am 6'2" and 13 stone, should I get a large or an xlarge? Thanks everyone
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Old 12-11-2006, 11:12 AM
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Default Re: 20 foot Power Cat - with jet power?

Why not? I like it.
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Old 12-11-2006, 07:21 PM
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Default Re: 20 foot Power Cat - with jet power?

I don't know of one american cat out there with jets so I doubt if many can speak with any authority on this subject over here.
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Old 12-12-2006, 01:36 AM
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Default Re: 20 foot Power Cat - with jet power?

I don't know about jets in a cat, but jets in general have these properties:
- if hull is designed right, jets allow for extreme shallow water running - yee hawww!
- safe (no blades from props to cut someone up)
- can do cool driving tricks like full throttle forward and then slam the bucket into reverse and bury the nose and possibly pop a windshield! (i've actually seen a guys do this on his jet boat -- with clients aboard!)
- less likely to damage motor or pump as it sits level or above hull (aka no outdrive or leg to strike objects)
Some cons:
- reverse on any jet is poor at best (on my merc sportjet it's almost non-existent)
- generaly lose power, especially if converting an outboard leg to a jet (about 25-30% power lose)
- real power to engine rpm is not linear, but more parabolic hence higher rpms used and therefore generally consume more fuel
- can suck up debris and clog impeller and you may be forced to pull boat out of water or go for a swin to free impeller intake
- cavitation is easier as the pump sits behind transom as opposed to 12-18" below hull

my 0.02
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Old 12-12-2006, 02:39 AM
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Default Re: 20 foot Power Cat - with jet power?

Thanks for the replies.
I might look at it this weekend anyway just to see if it's outboardable.

PS any advice on the shirt sizing???
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Old 12-12-2006, 07:02 AM
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Default Re: 20 foot Power Cat - with jet power?

Northernblue, I'd definately go with the XL. I wear a LG, and at 6'-0" and 180 lbs, it's a snug fit after a coupla' washings.
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Old 12-13-2006, 02:35 AM
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Default Re: 20 foot Power Cat - with jet power?

Thanks for the replies.
If I can get to look at it I will let you know.
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