verysmokey
New Member
Will be soon collecting antares 7.6 meter ,any info on how much diesel she will burn at 18 knots
fuel consumption volvo 200hp
- Thread starter verysmokey
- Start date
Divemaster1
Well-Known Member
A very emotive subject 
...
You'll get many views on this perspective if you look at other threads on fuel consumption, anything from experience to mathematical formulae based upon calorific value of marine diesel etc.
Bottom line is (and to borrow a phrase from a well respected member in here) that it is the propellor that moves the boat and the load on the propellor at a given RPM defines how much Hp the engine needs to provide for that specific load.
Found this .... http://www.boatpoint.com.au/reviews/2004/runabout/beneteau/beneteau-antares-760-9519
"..... at 2700rpm and 13.5kt, and 3000rpm and 17kt. Fast cruise was 20kt and top speed was recorded at 22.7kt...."
This may indicate that if hull is clean and if boat is not overloaded and under ideal conditions etc., your load on the propellor may take out somewhere around 150 - 175 hp from your engine at 18kt (no wind, no tidal stream).
It the above is the case, you may burn somewhere between 5 & 6 Gallons per hour (25 - 35 L per hour).
As you can see from my response, there are no way of giving you a precise answer as so many conditions wary at sea and the configuration & load on your boat) ...
If you have 5 or 10 people onboard, she will be heavier, and if you have a slight fouling (growth on hull etc), you need more HP to achieve same speed .. sea conditions also affect the fuel consumption.
On a diesel engine the "governor" will attempt to keep a given RPM, which mean that it controls the fuel required for this... so 3000 RPM could actually mean that you take out all 200 Hp ... or when sufring a wave, you could take out less than 100 Hp to maintain the same 3000 RPM... all this obviously affects fuel consumption.
Couple this with the fact that very few people actually run their boats four hours & hours at a fixed RPM, but they will potter around, go for a blast, then potter around again .. so actual fuel consumption per hour will differ with the use pattern, which is linked to where you use the boat...
...You'll get many views on this perspective if you look at other threads on fuel consumption, anything from experience to mathematical formulae based upon calorific value of marine diesel etc.
Bottom line is (and to borrow a phrase from a well respected member in here) that it is the propellor that moves the boat and the load on the propellor at a given RPM defines how much Hp the engine needs to provide for that specific load.
Found this .... http://www.boatpoint.com.au/reviews/2004/runabout/beneteau/beneteau-antares-760-9519
"..... at 2700rpm and 13.5kt, and 3000rpm and 17kt. Fast cruise was 20kt and top speed was recorded at 22.7kt...."
This may indicate that if hull is clean and if boat is not overloaded and under ideal conditions etc., your load on the propellor may take out somewhere around 150 - 175 hp from your engine at 18kt (no wind, no tidal stream).
It the above is the case, you may burn somewhere between 5 & 6 Gallons per hour (25 - 35 L per hour).
As you can see from my response, there are no way of giving you a precise answer as so many conditions wary at sea and the configuration & load on your boat) ...
If you have 5 or 10 people onboard, she will be heavier, and if you have a slight fouling (growth on hull etc), you need more HP to achieve same speed .. sea conditions also affect the fuel consumption.
On a diesel engine the "governor" will attempt to keep a given RPM, which mean that it controls the fuel required for this... so 3000 RPM could actually mean that you take out all 200 Hp ... or when sufring a wave, you could take out less than 100 Hp to maintain the same 3000 RPM... all this obviously affects fuel consumption.
Couple this with the fact that very few people actually run their boats four hours & hours at a fixed RPM, but they will potter around, go for a blast, then potter around again .. so actual fuel consumption per hour will differ with the use pattern, which is linked to where you use the boat...
polyanna
Well-Known Member
Not scientific but from 5 years experience with same boat and engine, I'd say allow 2 litres per Nm. I tend to cruise at 3200rpm 18-19kts (clean bottom, etc ,etc)
the quote above is pretty accurate "..... at 2700rpm and 13.5kt, and 3000rpm and 17kt. Fast cruise was 20kt and top speed was recorded at 22.7kt...."
Bob
the quote above is pretty accurate "..... at 2700rpm and 13.5kt, and 3000rpm and 17kt. Fast cruise was 20kt and top speed was recorded at 22.7kt...."
Bob
