Fuel tank capacity

[Seastoke]

Ht all fuel tanks are full of diesel,and i need to know how much tanks holds,to plan pasages, easy to work out in a car just fill up when light comes on not so easy on boat can you help.r

 

[dunmor]

there is a way of working out the capacity by measuring the tank, some one will be along soon and
tell you how its done.!

 

[Seastoke]

i dont seem to be able to get to all the tank.r

 

[dunmor]

are they sq in section or a silly shape?

 

[Seastoke]

square i think or oblong.r

 

[superheat6k]

What boat Make /Model ? If it is something other members have someone will likely know the answer.

 

[dunmor]

put a stick in, mark of fuel level, add 2 ltrs of fuel a nd mark, you should be able to work out how much fuel the tank will hold from this.

 

[gravygraham]

i dont seem to be able to get to all the tank.r

So you're saying no, you cant access the tank(s) to put a tape measure to them? Presumably you've not been able to track down any manufacturers info. Try posting the make/model/age of your boat here - might be helpful.

 

[Seastoke]

ok its a colvic 35 ft fly its been rengined and i think new tanks

 

[Seastoke]

dunmor am not with you

 

[gravygraham]

put a stick in, mark of fuel level, add 2 ltrs of fuel a nd mark, you should be able to work out how much fuel the tank will hold from this.

Hmm, this won't be very accurate if the tanks are tapered/flared in any direction.

 

[dunmor]

Hmm, this won't be very accurate if the tanks are tapered/flared in any direction.

if they are sq or oblong it should be fairly accurate.

 

[VicS]

there is a way of working out the capacity by measuring the tank, some one will be along soon and
tell you how its done.!

square i think or oblong.r

If not some funny shape to fit the hull

length x width x depth( all in cm) and divide by 1000 = capacity in litres

 

[Bandit]

99% of all boat tanks are stamped with capacity and pressure test.

A plate normally on the top , try a mirror to see.


Also a measurement is a good idea, bear in mind that all tanks have a fuel pickup line above the tank bottom or they would pick up water so volume less say 5%.

 

[gravygraham]

square i think or oblong.r

You need to give us a clue. Maybe spend a bit more time at the boat examining it and then re-post. Hopefully make some progress then.

 

[PCUK]

When you eventually measure the tanks it is 6.4 imperial gallons to the cubic foot.If they are odd shapes a bit of simple geometry will sort out the cubic footage.

 

[Bandit]

Cubic Feet



A cubic measurement is the three-dimensional derivative of a linear measure, so a cubic foot is defined as the volume of a cube with sides 1 ft in length.

In metric terms a cubic foot is a cube with sides 0.3048 metres in length. One cubic foot is the equivalent to approximately 0.02831685 cubic metres, or 28.3169 litres.

More information >>






In old money 1 ft³ = 6.2288 imperial gallons

or in mew money one cubic metre = 1,000 litres.

 

[David2452]

Hmm, this won't be very accurate if the tanks are tapered/flared in any direction.

Or large cross section, or if the boat moves a bit, if the tank were say 1m long by 500mm wide which is quite small for a large engined mobo then the level difference adding 2l would be 4mm which would be almost impossible to accurately measure with a dipstick on a moving platform and certainly not reliable enough for something as important as on board fuel calculation. Possibly OK for a small auxiliary tank on a yacht to give an idea.

 

[Bandit]

A dip stick which is calibrated ie put in 20 litres of fuel mark it then another 20 litres and mark it and so forth is more accurate than any electronic tank senders seem to be.

 

[gravygraham]

What's going on? Why are peeps suddenly yacking on about gallons and cubic feet? Is there some strange backwater somewhere still peddling juice in gallons? Come on folks, it's 2013.