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Miles Per Gallon - How Much Are You Burning ?

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Miles Per Gallon - How Much Are You Burning ?

Old 04-17-2008, 10:36 PM
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Default Miles Per Gallon - How Much Are You Burning ?

Just want to see what everyone was burining at their most economical BEST cruise speed.

Please keep it in this simple format.
Boat: [Year] [Make] [Model]
Power: [Single/Twin/Triple/Quad] [Make] [HP]
MPG: [in MPG]
Speed: [in mph]
Load: [Lite/Medium/Heavy]

Please DO NOT discuss the cost of gas. There are plenty of other wasteless thread for that. Please keep this strictly informational.



I will go first
Boat: 08 Baha King Cat 296
Power: Twin Zuke 300
Speed: 35mph
MPG: 1.75MPG / 1.50MPG / 1.25MPG
Load: Lite / Medium / Heavy
Old 04-17-2008, 11:02 PM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

38 Fountain TE / Quad 300 Mercury Optimax

50 mph
mpg = 1.4 / 1.3 / 1.2

60 mph
mpg = 1.25/ 1.15/ 1.05

70 mph
mpg = 1.15/1.0/0.9

I have yet to test a speed less than 50 mph, I imagine 1.5 mpg is possible in the 40's light
Old 04-17-2008, 11:03 PM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

Bertram 20
1965
Honda BF150
28-30 mph
3mpg- ready to fish, 4mpg light
Old 04-17-2008, 11:36 PM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

20' Thunderjet
Suzuki DF 140
Cruise @ 31 mph
MPG: 4.8/4.5/4.4
Load Light/med/ Heavy
Old 04-17-2008, 11:48 PM
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Default RE: Miles Per Gallon - How Much Are You Burning ?

Boat: 1972 Seacraft Seafari
Power: 1979 Mercury 200
MPG: 3.5
Speed: 35mph
Load: Medium
Old 04-18-2008, 05:05 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

Right around 3 with my Whaler.
Old 04-18-2008, 05:18 AM
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Default RE: Miles Per Gallon - How Much Are You Burning ?

Boat: [2000] [Henriques] [38 Flybridge]
Power: [Twin] [Yanmar 6cx-ete] [420 hp]
MPG: [.8]
Speed: [26]
Load: Doesn't vary all that much @32k lbs.

Old 04-18-2008, 05:23 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?



Boat: 2005 21 Contender
Power: 300 HPDI
Speed: 45
MPG: 2.7
Load: two people, full fishing gear.
Old 04-18-2008, 05:40 AM
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Default RE: Miles Per Gallon - How Much Are You Burning ?

Boat: 2005 MayCraft 2550XL
Power: Single Mercury OptiMax 225
MPG: 3
Speed: 27-30
Load: Med


Oddly my fuel burn is more affected by seas than weight. sometimes I actually get better mpgs with a little more weight due to being able to get the bow up more. In very calm seas I can see a solid 3mpg. In the slop I will go down to around 2.2mpg at its worst.

Here is cruising with my old prop that was a slightly less efficient than my current prop.

29.8mph burning 10.3gph w/ 2 onboard 70gal of fuel and fishing gear - not bad for a 25'6" hull (without bracket and pulpit)



Old 04-18-2008, 05:43 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

Boat: 2007 Bristol Harbor 21
Power: Honda BF200
Speed: 25-35mph
MPG: 4.3
Load: Heavy- 3/4 fuel, 4 people, dog, T-top, gear....
Old 04-18-2008, 05:52 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

Boat: [1988 [Wellcraft]
Power: [Twin] [Mercury] [250EFI]
MPG: [1.0]
Speed: [ALL]
Load: [ALL]
Old 04-18-2008, 06:02 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

Boat: 1991 29 Ocean Express
Power: Twin Crusader 7.4l 454
Speed: 21-27MPH
MPG: .8-1.0
Load: 3/4 Fuel, 4 people, dog, coolers, zodiac, gear
Old 04-18-2008, 06:17 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

1999 Proline 2202 WA
single 1999 Merc 200 hp
26 mph cruise
2.3 mpg w/2 adults and fishing gear
Old 04-18-2008, 06:40 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

2006 Sundance 17' Skiff
Etec 50hp
30 Mph Cruise
10 MPG



2001 ProSports ProKat 2200WA
Twin Yamaha 115
28 MPH cruise
2.5 MPG
Old 04-18-2008, 06:57 AM
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Default RE: Miles Per Gallon - How Much Are You Burning ?

2001 31ft Fountain
Twin 2003 Optimax 225
40 mph at 4,000
Heavy load

2 mpg
Old 04-18-2008, 07:05 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

2005 Contender 31
Twin 2005 HPDIs 300
3800 Rpms at 38 mph
medium load

1.4-1.6 mpg
Old 04-18-2008, 07:08 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

2008 Robalo R227
Single 2008 Yamaha F250
30-32 MPH Cruise
3.0 medium / 2.8 Heavy (heavy for me is full fuel and gear and six adults and some kids)
Old 04-18-2008, 07:12 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

2006 Henriques 28 Express 200 HP Yanmars 18 GPH at 3100 RPM @ 25 KNTs any load.......so if 25 KNTs is about 29 MPH then I am at 1.6 MPG..................
Old 04-18-2008, 07:14 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

Boat: [2002] [Monza] [Z280]
Power: [Twin] [Merc.] [225]

Slow Cruise:
MPG: [1.97]
Speed: [31.5 mph]
Load: [Medium]

Medium Cruise:
MPG: [1.65]
Speed: [40.2 mph]
Load: [Medium]

Fast Cruise
MPG: [1.58]
Speed: [47.3 mph]
Load: [Medium]
Old 04-18-2008, 07:16 AM
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Default Re: Miles Per Gallon - How Much Are You Burning ?

1991 Sunbird 20' CC
2007 E-TEC 150
28mph cruise
3.6mpg
medium load

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