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  1. #1
    Join Date
    Feb 2005
    Location
    Nederland
    Posts
    82

    Default Fuel consumption, what to buy

    Hello, I'm planning to buy a new boat. I had a Fairline 33 Targa, Princess 60 (lived on that for 4 years) and currently a RIB.
    Planning to go around the Meds with it. Don't want a fuel burner anymore.

    Looking for around 34 ft. Was thinking of the Fairline Targa 34, but saw it uses around 50 liters per hour when cruising. That's too much for me.

    Any good suggestions? What boat is comfortable on sea, can cruise around 20kts and doesn't use to much diesel?

    All suggestions are welcome.

    Thanks.

    Dan

  2. #2
    Join Date
    Oct 2003
    Location
    west yorkshire
    Posts
    4,196

    Default Re: Fuel consumption, what to buy

    what is an acceptable fuel burn?
    whats the boat budget?
    might be better going bigger boat with a slower cruise.
    Last edited by kashurst; 04-10-19 at 17:25.

  3. #3
    Join Date
    Sep 2002
    Location
    South
    Posts
    16,781

    Default Re: Fuel consumption, what to buy

    I think you need to think about speed.

    SC35 uses 60L/hr at 22kts, but much much less if you trundle along at 6kts.
    (the mpg figure is waay higher at 6kts)

    How fast do you need to go?

    .
    Last edited by FlowerPower; 04-10-19 at 19:16.

  4. #4
    Join Date
    Dec 2005
    Location
    Live London
    Posts
    3,909

    Default Re: Fuel consumption, what to buy

    If you want to go at 20 kts then the only material thing that will impact your fuel burn is the size of the boat.

    Will Hulls make a difference? Engines? Etc. Compared to the size of the boat - no not really.

    If the figures that come out dont work for you then there is only one option - and that is to slow down to displacement / hull speed.

    If that is your intention then get a displacement boat. In a flat sea you can plod in a planning hull boat, but it is not meant for it and a displacement will do it better.

  5. #5
    Join Date
    Apr 2011
    Location
    Boat- Western Med
    Posts
    5,441

    Default Re: Fuel consumption, what to buy

    OP says 20 knots .
    Which ever way you look at it a thirty something boat is going to be planing at that speed .
    Thereís some equations re the energy required to move x kg,s with Y hull friction at 20 knots .
    It needs a certain amount of fuel burnt to release the energy to do this .
    If itís 50/60 L hr then thatís it .
    If you want to burn less , then yield less energy the things gonna slow down .
    If it turns out his budget canít feed a 20 knot mobo touring the Med or he can only afford to go 6 knots at D speed then I suggest buy a sail boat .

  6. #6
    Join Date
    Jun 2005
    Posts
    325

    Default Re: Fuel consumption, what to buy

    Quote Originally Posted by DutchDan View Post
    Don't want a fuel burner anymore.

    Looking for around 34 ft.
    Quote Originally Posted by Portofino View Post
    then I suggest buy a sail boat .
    Perhaps this is the answer...

    Sun Odyssey 34.jpg

  7. #7
    Join Date
    Mar 2016
    Posts
    1,052

    Default Re: Fuel consumption, what to buy

    My marina neighbor and friend has a sealine sc29. Itís incredible on fuel with its stepped hull and twin D3 190.
    Even manages 43 mph top end. What a boat.

  8. #8
    Join Date
    Feb 2005
    Location
    Nederland
    Posts
    82

    Default Re: Fuel consumption, what to buy

    thanks, I'll look in to it.

  9. #9
    Join Date
    Feb 2008
    Location
    Farndon
    Posts
    3,117

    Default Re: Fuel consumption, what to buy

    Marex 320 acc
    Single engine shaft drive.

  10. #10
    Join Date
    Jun 2013
    Posts
    3,644

    Default Re: Fuel consumption, what to buy

    Quote Originally Posted by QBhoy View Post
    My marina neighbor and friend has a sealine sc29. Itís incredible on fuel with its stepped hull and twin D3 190.
    Even manages 43 mph top end. What a boat.
    As incredible as he claims, it will still only do 2-3 nmpg at cruising speeds. You simply cannot go fast in a boat without using lots of fuel unless you stick with very small day boats with something like a 30-50hp outboard on the back, where you will see something around 10mpg at cruising speeds.
    If found in the Brexit forum, please return to the real world.

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