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Old 27 March 2004, 13:08   #11
Country: UK - England
Town: Brittany/Portsmouth
Boat name: Merlin
Make: Solent 6.5
Length: 6m +
Engine: 200
MMSI: soon !
Join Date: Jul 2003
Posts: 5,451

whats your 6 mtr Osprey rated at as a matter of interest


Happy New Resolutions!!! : RIBbing for the craic!!!
The Jackeens is offline   Reply With Quote
Old 27 March 2004, 13:34   #12
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,533
I think max power is better, I find it difficult to believe that manufacturers of Gemini and Ribcraft's stature would rate a transome at a given horsepower without at least checking the transom would hold the weight of the three leading brands of engine.

Out of interest why should an Opti be that much heavier than a conventional two stroke, surely the fuel compreesor and electronics don't weigh that much more.

I don't see a negative myself

Isn't Top Melon a great example of Maxing out a boat.


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Rogue Wave is offline   Reply With Quote
Old 27 March 2004, 13:41   #13
Country: UK - England
Town: Poole
Make: Humber - Ocean Pro
Length: 6m +
Engine: 200 Mariner Optimax
Join Date: Sep 2003
Posts: 92
Bugger, hope Ive done the right thing!

Anyone know the max weight of the engine for a Humber Ocean Pro 6.3?

The max HP is 200.

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Old 28 March 2004, 03:49   #14
Country: UK - England
Town: Great Harwood, Lancs
Boat name: Tigger II
Make: Bombardier Aerodeck
Length: 3m +
Engine: Tohatsu 25HP
Join Date: Jul 2001
Posts: 626
Hi Nick

Think its just a bit heavier than my 240HP Yanmar

Regards Gary
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Old 28 March 2004, 05:52   #15
Country: UK - England
Town: Weymouth
Boat name: Splitz
Make: Ring
Length: 6m +
Engine: Honda 130
MMSI: 235015866
Join Date: Jan 2004
Posts: 78
Isnt it a bit like cars?

We dont all drive around in Bmw M3 EvoII we choose engines that suit our purposes (even if we would prefer more).

I assume car manufacters sell more 1.8 petrol/diesel versions than v8 twin turbo nitorus supercharged versions.
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Old 29 March 2004, 04:56   #16
Country: Denmark
Town: Copenhagen
Boat name: Nemesis
Make: CAPE 79
Length: 8m +
Engine: Suzuki 250 4 stroke
Join Date: Dec 2001
Posts: 252
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Rating a hull for max HP, hasn't this something to do with the CE making of the boat.

I do belive that there is a rule in the CE making that states how to calculate the max HP for your boat.

something like:
(length * width * 15 - 33) / 1,15 = HP (allowed)

Don't hang me on this, it only from memory. The static values might be a bit off.

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Old 29 March 2004, 06:49   #17
Country: UK - England
Town: Portsmouth
Make: Tornado
Length: 6m +
Engine: Yamaha HPDI 200
Join Date: Jan 2003
Posts: 323
Send a message via MSN to thorper
Our tornado is rated for max 225hp I think. However, yamaha do a 150 and 200hp with the same weight, whereas the 225 has the same as the 250 and 300! Ultimately we got the best power/weight with the 200. When going flat out, it certainly doesnt feel like a compromise


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