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Old 28-09-2009, 09:02 PM   #1
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Country: UK
Location: London
Boat name: Athito
Boat make: Sunseeker Superhawk 34
Engines: 2x300hp Yanmar 6LP
Cruising area: Solent

Join Date: Nov 2006
Location: London
Posts: 149
Cougar race boat performance

So...seen this Cougar in another post here and fleabay and am intrigued.

How does performance change as power increases in something like this??

Basic facts as I have them:
LOA: 46'
LWL: dunno
Beam: 9'6"
Draft: dunno - but if you look at the last pic on ebay it gives an idea
Displacement: Original dry/no engine weight 5,000lb

That plus 18,500lb of kit 3xCat800hp on Arnesons gave 80+mph in 1998


What would performance be with, say (ALL DIESEL):

2x500hp -- 1,000hp

2x600hp -- 1,200hp

2x750hp -- 1,500hp

3x500hp -- 1,500hp but substantial(??) weight difference compared to 2x750hp....but cheaper???

3x750hp diesels 2,350hp I assume up to 18,500lb of weight and 80+mph

Also assume that Arnesons is the only way to go with this sort of HP?


Just getting ready to "add to basket" and fire up my PayPal account...just wonder if he will deliver to a PO Box in Nigeria.




http://www.glpower.com/spiritAmerica.html

http://www.glpower.com/media/SpiritofAmerica.wmv

http://cgi.ebay.co.uk/46%27-COUGAR-O...920163003r5430
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Old 29-09-2009, 08:56 AM   #2
numbskull
 
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Country: United Kingdom
Location: South
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Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast

Join Date: Mar 2004
Location: South
Posts: 15,958
There's a US1-46 here with surface drives and Yanmar 440's (x2), I think it runs around 50mph.

Arneson / Surface drives would have been the only easy option back then I guess, though Mk 6 (or the now discontinued Diesel 7) would have probably done quite nicely a while later, and given a bit of decent trim control too. (It's not a true stepped design, so positive trim would be usefull for top speed)
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Old 29-09-2009, 06:29 PM   #3
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Wildo

I think we could put a wildo in that to Steph. I had seen that but I have a slow moveing project as it is.

Josh
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Old 29-09-2009, 06:42 PM   #4
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Country: United Kingdom
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Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast

Join Date: Mar 2004
Location: South
Posts: 15,958
Could someone translate that please.
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Old 30-09-2009, 12:05 AM   #5
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Water jet bow and stern thruster we just put one in his sunseeker.
Hope you don't mind me saying that stef.

Josh
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Old 30-09-2009, 08:31 AM   #6
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Country: England
Location: South West
Occupation: Development engineer
Interests: Fast boats
Boat name: Xtreme
Boat make: Bernico 21
Engines: Mercury F1, 300 Drag, XR2 "Fingerported"
Cruising area: South West

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Location: South West
Posts: 1,043
?

WTF
What does that have to do with this thread??

Am I missing something?
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