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Old 09-09-2018, 02:52 PM   #101
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as I spend little time in bedrooms anyways for things other than sleeping. .
Wifey B: That's too bad.

Otherwise found your post interesting and good arguments. Now some of your design ideas such as #5 sort of lost me.
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Old 09-09-2018, 03:43 PM   #102
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What cat comes closest to your fantasy listing today?
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Old 09-09-2018, 04:02 PM   #103
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Those that are thinking a power cat uses less fuel they may be right when looking at a specialized one off build like catch cry which I linked to before but get something with more size and comfort and they suck fuel like anything else, some suck a lot more.
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Old 09-09-2018, 04:19 PM   #104
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Comfort, load carrying and range for us would mean this

She gets her range and economy from running single engine.

DOMINO 20: DOMINO... Powercat with muscle

Here for $875,000 us
https://www.yachtworld.com/boats/200...no-20-3223885/
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Old 09-09-2018, 05:45 PM   #105
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Comfort, load carrying and range for us would mean this

She gets her range and economy from running single engine.

DOMINO 20: DOMINO... Powercat with muscle

Here for $875,000 us
https://www.yachtworld.com/boats/200...no-20-3223885/
50,000nm in 8 years...not too shabby
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Old 09-09-2018, 07:21 PM   #106
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Comfort, load carrying and range for us would mean this

She gets her range and economy from running single engine.
I agree.
Our FP MY 37 has the ability to go 21knots on both engines.
And the ability to go 2000 NM at 7.5 knots on 1 engine.

We typically cruise on 1 engine at 8.5 knots .
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Old 09-09-2018, 07:27 PM   #107
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Those that are thinking a power cat uses less fuel they may be right when looking at a specialized one off build like catch cry which I linked to before but get something with more size and comfort and they suck fuel like anything else, some suck a lot more.
I think the ad listed above for Domino is a good example of cats using less fuel. check out the fuel consumption tables. I am not aware of any 65' monohull that can do anywhere close to 2300 miles on 2950gallons of diesel at 20 knots. What other 65' ocean going boat can go anywhere close to 20 knots with only 2x300hp engines?
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Old 09-09-2018, 07:54 PM   #108
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This videos shows how they put so much into a 37 foot power cat.

https://youtu.be/Hj1iPU0e260
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Old 09-09-2018, 09:08 PM   #109
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I think the ad listed above for Domino is a good example of cats using less fuel. check out the fuel consumption tables. I am not aware of any 65' monohull that can do anywhere close to 2300 miles on 2950gallons of diesel at 20 knots. What other 65' ocean going boat can go anywhere close to 20 knots with only 2x300hp engines?
Again, Domino is a custom build with attention to weight saving.
A couples boat, single cabin, extensive foam core and relatively light construction.
99% of power cats are not.

The above would be something like a 20mm or greater core with 1mm of glass each side and a wafer thin smear of filler and paint.

I have done work on production cats where so called foam core was 10mm and 5mm of woven rovings and chopped strand mat. On top of that was 3mm of gel coat, none of which is strong, all is heavy, robbing the cat of performance and load carrying ability.

Interestingly, dominos cruise speed of 8 knots has a similar fuel burn to our boat at 8 knots
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Old 09-09-2018, 09:32 PM   #110
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I definately think power cats for cruising are great.
If money was no object and we were looking at spending nordhavn money it would be no contest, a well designed and lightly built 60ft plus powercat all the way.
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Old 09-09-2018, 11:56 PM   #111
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I definately think power cats for cruising are great.
If money was no object and we were looking at spending nordhavn money it would be no contest, a well designed and lightly built 60ft plus powercat all the way.
Agree, and that’s IF money were truly no object, but my style would be more in the line of an Aquilla 44 or 48 with my own interior appointments. I know myself. I’d still be looking for a bargain.
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Old 09-10-2018, 01:22 AM   #112
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Interestingly, dominos cruise speed of 8 knots has a similar fuel burn to our boat at 8 knots
That is amazing, and seems impossible that your boat can travel at 8 knots on 2.3gph. That is slightly better than my 40'er at closer to 6.5 knots, and it only weighs 22k lb.
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Old 09-10-2018, 02:17 AM   #113
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I did say similar
I was a bit off
We do close enough to 15lph@8 knots
She does close enough to 17lph@10

But that fuel saving would cost me several hundred thousands of dollars to get
And would take several hundreds of thousands of nm to break even on the capital outlay
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Average over 8 years:

- Range: 6,000 NM at 10 Kts (10,000 NM at 7.5Kts)

- Burn: 4.5GPH at 10 Kts (1050rpm). 1.8GPH at 7.5 Kts (900rpm)
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Old 11-22-2018, 01:20 PM   #114
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Looking for a fast ocean capable cat?
I met this guy once, speed on passages is something of an obsession.
https://www.trademe.co.nz/motors/boa...67fdfb81fdc256
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