Survey: Fuel Consumption

[jefflee2k]

Briefly, what is your?
1. Boat length
2. Boat weight
3. Outboard make/model
4. Fuel consumption at cruising speed (gal/hr, lt/hr)
5. Top speed

FYI: Metric/English Ref.
1 liter = .26 gal
1 mt = 39.37 in
1 kg = 2.2 lb

[Nos4r2]

Originally Posted by jefflee2k

Briefly, what is your?
1. Boat length
2. Boat weight
3. Outboard make/model
4. Fuel consumption at cruising speed (gal/hr, lt/hr)
5. Top speed

FYI: Metric/English Ref.
1 liter = .26 gal
1 mt = 39.37 in
1 kg = 2.2 lb

As profile, about a mile per litre at 20 knots.

And 1 litre is equal to 0.22 imperial gallons and 0.26 USg

[BogMonster]

Originally Posted by jefflee2k

Briefly, what is your?
1. Boat length
2. Boat weight
3. Outboard make/model
4. Fuel consumption at cruising speed (gal/hr, lt/hr)
5. Top speed

FYI: Metric/English Ref.
1 liter = .26 gal
1 mt = 39.37 in
1 kg = 2.2 lb

1. Humber Destroyer 5.8m

2. Typically 750kg excluding people perhaps? never weighed it but going on manufacturers quoted wt plus a guess for console, fuel etc

3. Johnson Fastrike 115GL 2 stroke carb

4. Overall fuel consumption about 1.25 litres per mile on each run from fillup to fillup at a range of speeds, no fuel meter fitted this is just miles on the GPS against the amount of fuel put in the tank to fill it up again. Actual tank figures since I started keeping records recently, 1.22/1.25/1.30/1.16/1.23lpm

5. If I take the spare fuel cans out, just over 40kt. Typically loaded, about 39kt trimmed right out, typically loaded and trimmed the way I cruise, it will get to about 36kt.

[memo]

Originally Posted by jefflee2k

Briefly, what is your?
1. Boat length
2. Boat weight
3. Outboard make/model
4. Fuel consumption at cruising speed (gal/hr, lt/hr)
5. Top speed

FYI: Metric/English Ref.
1 liter = .26 gal
1 mt = 39.37 in
1 kg = 2.2 lb

1. 4.20 Joker boat
2. Almost 450kg full setup.
3. Evinrude e-tec 40hp 2004
4. The best i could get 0.52lt/mile
5. Top speed 30 knots

[K&S]

Figures from a 40 knt run today - very calm

1. 6.5m - xs
2. guesstimate @ 850kg (100l fuel, 3 adults, 3 children & 1 full set of dive kit
3. Suzuki 175 f/s 23 pitch prop
4. Cruising 4000rpm 1L per n/mile 25/ 28knts
Cruising 5000rpm 1.28L per n/mile 36knt
5. 6100 rpm - 42knts

Figs taken using GPS & fuel flow meter

[Erin]

Osprey Vipermax 6.5
Suzuki 200Hp
Overall weight - no idea but apparently around 1500kg
Today, with 5 people, 32 kts at 4,000rpm = 8 gals per hour = 1.1 litre per mile

[LURCHER]

Humber 8.5
top speed 33kn
3 Tons with full fuel
1.1l mile @ 20knots
£0.74 per litre

[Robbie Diesel]

1. Tornado 7.5 x 2.75 beam
2. 1500kgs
3. Yamaha 300 hpdi
4. Light load 30 lph @ 30 mph, loaded 36lph @ 30 mph.
5. 63mph / 54 knots = 100 LITRES AN HOUR!!!!!

Taken using Yamaha fuel flow guage & Lowrance GPS

[Mollers]

Originally Posted by Erin

Osprey Vipermax 6.5
Suzuki 200Hp
Overall weight - no idea but apparently around 1500kg
Today, with 5 people, 32 kts at 4,000rpm = 8 gals per hour = 1.1 litre per mile

What pitch prop are you running and what sort of top speeds are you achieving?

[Erin]

I'm using a 23".

I have only very briefly opened up the throttle and noted 42kts on the GPS, but revs were only just over the 5k mark by that point, although were still climbing. I'm only 4 hours into the running in, so I'm reluctant to run at wot until I've done a few more hours.