According to the teacher

[powerboatr]

HMMM
I dont think so
cat for argument, notice engine size 891 cu In versus 444



similiar
but not near 800hp



i would surmize said teacher is just a bit optimistic.
maybe 800hp ONCE for a short time but doubtfull any longevity

 

[Crumm]

I seem to recall that "Marine HP" is rated different than regular HP. I forget just how the conversion goes but someone can probably find it. The 800hp rating is not comparing apples to apples..

 

[bushpilot]

I seem to recall that "Marine HP" is rated different than regular HP. I forget just how the conversion goes but someone can probably find it. The 800hp rating is not comparing apples to apples..

Really...i thought everyone just rated HP at the crank...anything else
would provide a worthless comparison.

manufactures spec hp @ the crank...the general public wants to know
the hp at the wheels...

 

[powerboatr]

Really...i thought everyone just rated HP at the crank...anything else
would provide a worthless comparison.

manufactures spec hp @ the crank...the general public wants to know
the hp at the wheels...

read here
they are basically the same as crankshaft for inboards,
outdrives and outboards are PROPshaft ratings, which do not apply to large diesel set ups, its all bhp at the flywheel


"Power rated in accordance with NMMA procedure as crankshaft power. For units equipped with Caterpillar supplied marine gears, reduce crankshaft power by 3% for propeller shaft power.

All Cat Marine engines shipped on or after January 1, 2000 have ratings which meet IMO standards for nitrogen oxide emission limits in Regulation 13 of Annex VI of Marpol 73/78"

"

 

[bushpilot]

read here
they are basically the same as crankshaft for inboards,
outdrives and outboards are PROPshaft ratings, which do not apply to large diesel set ups, its all bhp at the flywheel
"

damm those guys should be lawyers....or accountants...messin w/
numbers like that

and COOL...i learned something new already today ! thanks !