Fuel Calculations

[tcrobine]

Does anyone have a rule of thumb for calculating fuel /diesel required. We have an Antares 760 / fuel tank capacity 220lts / engine Volvo 200hp/ Cruising speed 16kts. The planned journey is from the River Orwell to St Katherines London. Any ideas would be appreciated.

 

[wheneverIcan]

try my new site www.passageplan.com - there's a thread a bit lower down on it

instead of plotting a route go staight to fuel calc (http://www.passageplan.com/plan_a_route/fuel_calc.html)

enter the info you know and you should see interesting info appearing.

Just a rule of thumb and intended for diesel not petrol

let me know if it seems about right for the consumption you get

Simon

 

[duncan]

spot on for mine Simon - single 240 yanmar on an OD

 

[Deleted User YDKXO]

You can also estimate fuel usage from the average specific fuel consumption for a diesel engine @ 0.24kg/kwh. Assuming specific gravity of diesel is about 0.9 and engine is developing about 150hp at 16knots, then the engine is consuming about 40 litres per hour or 8.8 galls per hour. Thats equivalent to 1.8nm per gallon. Calculate the distance for the trip and you can estimate the fuel usage

 

[gimmesunshine]

good for me too, 2 x kad32

 

[hlb]

Not sure there is a rule of thumb. Last week my boat was doing 22 knots flat out, before lift out it was doing 12 knots. A few years ago, with less anifouling build up it was doing 25 Knots. So a vast variation in fuel burn. By the way it's supposed to do 27 knots. Halve the calculations and make sure you get there.

 

[David2452]

"try my new site www.passageplan.com - there's a thread a bit lower down on it"


Oh dear, the world seems to end just north of Harwich??????

Or is it me not using it right?

 

[muckypup]

No mention of hull design in these calculations either... It does say it's only approximate though.

S.