Anyone help with fuel consumption rates for TAM63p diesels?

[cliffdale]

I've googled this and found info around a mile per gallon at 20 knots, seems about right.

Boat is Phantom 38. I cant find figures for lower speeds eg, trundling along around 8 to 10 knots. Has anyone got info on figures please.
Cliff

 

[sharpness]

Ironically, the following figures are reference to a Fairline Phantom 38 powered by twin Tamd63p. It seems your better off sticking at 16 knots than 10 knots for best economy.

 

[cliffdale]

Thanks for the info. Very useful guide.
Cliff

 

[baylabayla3288]

I have a Phantom 38 with 63Ps. It burns around 4 liters per nautical mile at 20 -24 knots, @ 2200 - 2400 rpm. At 1000 rpm, 8 knots, it burns less than half. Mine has 900 hours and I still get 31 knots top speed with half tanks. Last winter I had half of the cup shaved off the props. The soot problem is almost gone. Good overall performance and seakeeping.

 

[baylabayla3288]

Ironically, the following figures are reference to a Fairline Phantom 38 powered by twin Tamd63p. It seems your better off sticking at 16 knots than 10 knots for best economy.

View attachment 34507

Actually this is not true, I tried it, at 16 knots it burns close to 5 ltrs per sm. That diagram is based on theoretical prop demand curves.

 

[Bandit]

My boat is much heavier 18.5 tons but 2x 63p.

19.5 knots 2500 rpm, average 86 litres per hour 6.04 litres per mile.

say at 2500 rpm you do 26 knots,

6.04 x 19.5/ 26 = 4.53 litres per nautical mile approx.

The 86 litres per hour average would be the same assuming your loading on the engine was the same.

However at 8 knots its a fraction of 4.53 litres per mile buggger all in fact

 

[Greg2]

I asked a similar question a while back. Might be some useful info in the replies here http://www.ybw.com/forums/showthread.php?304034-TAMD-63P-River-Use&highlight=

 

[putrum]

HI ! firts of all, apologise for my english.

i want to know, 4 litres per nautical mile with 2 engines? i think is very little for this boat?
im looking for one phantom 38 of 99, i am comparing consumtions.

I have a Phantom 38 with 63Ps. It burns around 4 liters per nautical mile at 20 -24 knots, @ 2200 - 2400 rpm. At 1000 rpm, 8 knots, it burns less than half. Mine has 900 hours and I still get 31 knots top speed with half tanks. Last winter I had half of the cup shaved off the props. The soot problem is almost gone. Good overall performance and seakeeping.