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What is the Most Fuel Efficient Twin Outboard Boat??

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What is the Most Fuel Efficient Twin Outboard Boat??

Old 05-07-2020, 03:19 PM
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Default What is the Most Fuel Efficient Twin Outboard Boat??

I am curious what everyone thinks is the most fuel efficient twin engine outboard boat is. I have seen numbers on 28 intrepids, 290b seavee and 27 ocean masters hit the 3mpg mark at a decent cruise speed, with the right power of course. What else is there?
If there is already a thread on this please point me to it! thank you!

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05-07-2020, 03:49 PM
sxracer
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Originally Posted by Mr. B View Post
I am curious what everyone thinks is the most fuel efficient twin engine outboard boat is. I have seen numbers on 28 intrepids, 290b seavee and 27 ocean masters hit the 3mpg mark at a decent cruise speed, with the right power of course. What else is there?
If there is already a thread on this please point me to it! thank you!
I cant imagine ANY of those hulls getting 3 MPG at cruise speed with twin outboards. 2 MPG yes, 3 no.
Old 05-07-2020, 03:49 PM
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Originally Posted by Mr. B View Post
I am curious what everyone thinks is the most fuel efficient twin engine outboard boat is. I have seen numbers on 28 intrepids, 290b seavee and 27 ocean masters hit the 3mpg mark at a decent cruise speed, with the right power of course. What else is there?
If there is already a thread on this please point me to it! thank you!
I cant imagine ANY of those hulls getting 3 MPG at cruise speed with twin outboards. 2 MPG yes, 3 no.
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Old 05-07-2020, 03:51 PM
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Originally Posted by sxracer View Post
I cant imagine ANY of those hulls getting 3 MPG at cruise speed with twin outboards. 2 MPG yes, 3 no.
Barely 2
Old 05-07-2020, 03:56 PM
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I'm getting 2 MPG @ 50 MPH.
Old 05-07-2020, 04:22 PM
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Originally Posted by z3axv View Post
Barely 2
The intrepid would get mid 2s with twin 200s, the others not a chance.


Most fuel efficient boat with twins is gonna be a Carolina Skiff.

This isn't a very reasonable question OP, what are you trying to do?
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Old 05-07-2020, 04:27 PM
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27 Ocean Master got 3.1 mpg


Bravo 1 LT Prop Test / Ocean Master 27 / Twin Mercury 150s
Old 05-07-2020, 04:31 PM
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I'm getting 3.2 @ 26 MPH 4000 RPM Twin F115 Yamaha on a World Cat 230cc Most times I run 4500 RPM 2.8 @ 30 MPH
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Old 05-07-2020, 04:43 PM
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The african supercat.za, with narrow sponsons up front, and much higher stepped flat planning sufaces that come into play when you give it power and the bow rises is the one that amazes me.

Its 38 x 17', will get around 2.6mpg with a pair of 100 Yamahas, at 20 knots. This hull pushes a lot of wind with a full upper station that very wide too. It originally ws rigged with twin 27 hp diesels. Take off the upper station and she gets around 3.5 at 20 knots.

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The same OEM has a 29x12 that runs with twin 25 to 50, up to around 25 knots and can be rigged with diesels too. It has a huge berth, a up bathroom and a storage area under decks. With twin 40's she will top out around 25 knots, getting around 4-7 mpg depending on speeds.

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Old 05-07-2020, 05:05 PM
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Side view of this hull that's a bit different
Old 05-07-2020, 05:09 PM
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Those cats are cool. Its going to be hard to top 3 mpg with twins on the hulls mentioned. I think it can be done under test conditions but, real world fishing conditions will be difficult. My very light 25' SeaVee 300 Yam can get upwards of 3.6mpg in the ditch. It wont do that loaded for bear in 2-3 seas.
Old 05-07-2020, 05:10 PM
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31 Fountain twin 225 optis, 2.4 mpg at 42 mph.
Old 05-07-2020, 06:21 PM
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i've been on a 28 intrepid with new twin 200 yamaha 4 strokes getting around 2.5. Seen reports on the older 29 seavee with opti's getting 2.5+. Saw a post on a 27 open Contender with the new 225 mercs in the mid 2mpg range.

Looking for something efficient enough to cruise to the exumas with 2 people from south florida with out braking the bank or having to worry about refueling in the exuma cays since fuel can run out and be hard to come by. Instead of waiting an extra day or 2 can make it back to nassau or great exuma on (4) 6 gallon jerry cans.
Old 05-07-2020, 06:46 PM
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Long skinny panga with twins will be the best youll get
and that only 3+
Old 05-07-2020, 08:00 PM
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Sounds like I need to get a bigger boat so I can get better mileage. I’m having a hard time believing some of these numbers
Old 05-07-2020, 08:11 PM
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12-13 foot twin hill with twin Suzuki df6.
Old 05-07-2020, 08:20 PM
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What larger outboard, 200hp +, gets 5 mpg? If a boat with twins gets 2-3 mpg, double it for mileage of a single...had a panga with a 115hp, running it very easy it might get 4.5-5.0 mpg....
Old 05-07-2020, 08:21 PM
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THT poster Welder said that his Pacific 23 got around 5 with a single, so probably less with heavier twins.

Pacific Boats
Old 05-07-2020, 08:23 PM
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There's a member here he can verify as it was his boat.
1987(I think) Intrepid 30' cuddy cabin
Twin 250 Yamahas 4s 2.5-2.8 cruise at 42mph...I think he ran 3800rpms at cruise...Topped out at 58...
Old 05-07-2020, 08:25 PM
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New Whitewater 28 with twin 225 Merc’s. Averaged 2.7 since new (100 hours). Port Canaveral so average 2-3’. Main 150 gallon and front 75, so well over 500 mile range. Ran it for a half day at Matecumbe, then back up to Canaveral and had 100 gallons left.
Old 05-07-2020, 08:27 PM
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The lower the sides the lighter the hull, and boats like the Pathfinder, Prowler 25 and the Cayo 26 Catamaran are very fast. The Rambo 27 is another, although narrower

The Competition 25 with a single 300 touches 3 mpg and its a 24.5 degree deadrise like the whitewater.

Last edited by Bullshipper; 05-07-2020 at 08:47 PM.

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