1999 3000 SCR
Twin 5.0L with Bravo II drives 3 blade aluminum props (don't know the dimensions)
1800 RPM, between 6 and 8.5 Kts, depending on tide and sea conditions.
3600 RPM, 21 to 23 Kts (again depending)
4000 RPM, about 24-25 Kts.
I'm still new to the boat, and getting the feel for her and her fuel consumption. I spend a lot of time cruising in the 7 Knot range, and it seems to be about double the fuel mileage, around 2 MPG. Seems to be around 1 MPG at 21 Kts.