I do know nothing about the systems on Your boat and about how power hungry it is.
I do not know if You have a generator
, but it is quite probable on 53 ft Jeanneau
Let's make some assumptions:
- You have a generator of about 6 kVa
- You do not want to waive most of day to day conveniences You are used to.
- Your trip will be up to 9 days - we can believe Boatman
You will probably use about 20 liters of diesel
per day by average just for generator. It mean You will use 75 % of fuel just for generating the power. It will theoretically leave You with 60 liters for main engine
- something between eight and ten hours of motoring. But if Your tank is 240 liters nominally, You can really use about 85 - 90 % of the nominal capacity, so the reserve for motoring will be ilusoric rather.
If You do not have generator and will use the main engine
for generating power (motorsailing for this time) You will need even more fuel, as a gain on average speed can be not huge and alternator
is much less effective than a generator.
So - You need to have more fuel on board or to limit Your conveniences (like full lightning
, hot water
and so on).
My boat is of very similar size and quite power hungry. I have a quite effective generator, and my own allowance for fuel is 40 liter per day for the cruise
lasting just several days. For longer trip it is less by average, as the allowance for main engine is diminishing. I can of course limit my power consumption
heavily, but... why to be less comfortable, than necessary
If Your boat is less power hungry than mine (rather she is) You can probably calculate for about 30 liters a day:
9 X 30 X 1.25 = 340 liters (25 % reserve accounted for)
Your tank is (usable) 240 X 0.85 = 200 liters
So taking additional 140 liters in handy cans is probably quite reasonable.
Not big problem with storing such amount of fuel on 53 footer
Have a nice sail