Looking for real world cruise speed, fuel burn, load etc... with the different power packages offered in the 2000 - 2005 50's. 820 MAN's 860? MAN's CAT 3406E's Series 60 DD's
I have an 02 with the CAT 3406e package. Top End is 2350 rpm / 32.2 kts. Burn was 80gals+ high cruise is 2000 rpms. 26 kts. Burn is ~60 gals. Load 70-72% Easy cruise 1950 rpms. 25.5kts Burn is 54 gals/hr. Load is 65% Generally speaking, I have found my boat needs about 3 seconds worth of tabs to give me the best result. Tabs can add 1.25 kts and drop 2-4 gals per hour overall. Ideal running has coolant temp ~180 / Boost around 24 psi / Fuel filter pressure better than 65 psi.
I have a 1996 50’ with 820 Mans. I run 27 knots at 1900 rpm. Burning right around or just under 60 gph. If I run it to the pins at 2300 I’m getting 34-35 knots.