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2003 38/40 Open performance #s

Discussion in 'Luhrs Yacht' started by Bucksh0t, Feb 10, 2020.

  1. Bucksh0t

    Bucksh0t Member

    Joined:
    Mar 18, 2018
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    Location:
    Morehead City NC
    I thought I would post some of my cruise speeds and fuel burn #s.
    I have an 03 40 Open with the Yanmar 6CXGTE2 engines, they are rated at 500hp .

    These #s are with about 250 gallons of fuel, all my normal gear and 2 people.
    Running down the beach in a 2 foot light chop,

    2000 rpm - 18-19 knots - burning 20 gallons per hour
    2200 rpm- 21 knots - burning 25 gallons per hour
    2500 rpm- 24 knots- burning 32 gallons per hour
    I have seen 30-32 knots at 2950 WOT

    In the am leaving with a full crew, full tank and all the essentials for an offshore day I see about 21 knots at 2400 rpm burning about 32 gallons per hour. That is also normally in a head sea.
  2. Bucksh0t

    Bucksh0t Member

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    Location:
    Morehead City NC
    20190520_110409(0).jpg
  3. Rscriv

    Rscriv New Member

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    Feb 10, 2020
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    Location:
    Stony Brook NY
    Nice fish! But more interested in the deck? What product is that? How long have you had it?
  4. Bucksh0t

    Bucksh0t Member

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    Location:
    Morehead City NC
    AquaTraction, We are the dealer for NC
  5. Shawn Keulen

    Shawn Keulen New Member

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    Mar 7, 2020
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    Location:
    Winthrop Harbor
    Are these posted numbers per side or total? By the way beautiful boat just purchased same package.
  6. Bucksh0t

    Bucksh0t Member

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    Location:
    Morehead City NC
    Total, Welcome to The Forum make sure to post some pics when you get a chance
  7. Shawn Keulen

    Shawn Keulen New Member

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    Mar 7, 2020
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    In thought so and just making sure. Very similar to what I experienced with mine. Will post a pic shortly
  8. JW Holt

    JW Holt New Member

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    Oct 17, 2017
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    Location:
    Houston
    Since I am stuck in the house with a new child I have plenty of time to post numbers.
    38/40 convertible 450c Cummins numbers are with a fresh bottom, full fuel and water 6ppl all gear and 300 lbs ice ( standard day trip). This boat is under propped due to our heavy overnight load out which usually includes the above plus 150 gal of extra fuel on deck and 300 more lbs of ice. Dirty bottoms or not she never gets over 175 degrees this way. After 550 hours the aftercoolers show no signs of overloading ( see seaboard marine for info on that). I have found the boat picks .5kts per 1000 of weight taken off.

    1100 rpm 7-8kts 5gph
    2000 rpm 14-15kts 20gph
    2200 rpm 17-18kts 27gph
    2300 rpm 19-20 kts 32gph ( usual cruise)
    2400 rpm 21-22 kts 36gph
    2650 rpm 26-27 kts ? Only do this once a trip for a min or two to check engines. .

    Boat is 1kt quicker across the board with half fuel and 3ppl. 2” of pitch to the props would pick it up more but as earlier stated we load it too much tooofter to worry about it.
  9. Rscriv

    Rscriv New Member

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    Stony Brook NY
    Thanks JW for that VERY comprehensive breakdown!
  10. CaptainChase

    CaptainChase New Member

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    Dec 20, 2012
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    Location:
    Seabrook, TX
    Working on a deal right now to pick up a 40 open...fingers crossed we can work out a deal and start changing things up to suit the family’s needs!
  11. Bucksh0t

    Bucksh0t Member

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    Location:
    Morehead City NC
    Hope it works out, if not I will probably put mine on the market soon. Hit me up