Inboard Diesel Fuel economy

[Heino]

I have a Zodiac inboard diesel on a Zodiac RIB 733. Does anyone have an indication of the fuel economy to expect.
We want to go out to the islands and its about 180km out. So I need to calculate the fuel to take with.
I do not have the boat yet, picking it up in a week, so I don't have actual numbers available, hence this question.
Thanks

[Searider]

Typically a Diesel engine will use 5 gallons per hour per 100hp.

Typically if you back off your speed from maximum by about 25% you'll half your consumption.

What boat and engine and what's the top speed?

[Todd Grimley]

Mine uses approx 0.8litres per kilometre. It's a 200hp Volvo, zodiac rib. My previous zodiac 733 had a 315hp Yanmar and drank close to 1 litre per km! Good luck!

[Heino]

Thanks Todd, I will hopefully get the boat in the water in the next week. Just bought it. I am considering getting a mechanic to look over it before starting it.


Do you perhaps know how to connect water to the engine to run or flush it. Does it take the same type of muffs as an outboard or is there some other way to connect the hose to the motor.


Thanks