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The birth of Octopussy

Discussion in 'General Yachting Discussion' started by AMG, Apr 15, 2020.

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  1. AMG, Apr 15, 2020
    #1
    AMG

    AMG YF Moderator

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    Here is a new video with the guys behind the fastest Superyacht in the World at that time...

  2. cleanslate, Apr 15, 2020
    #2
    cleanslate

    cleanslate Senior Member

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    Wow! That was really something to see. Thanks for sharing this. A true learning experience for me.
  3. Capt Ralph, Apr 15, 2020
    #3
    Capt Ralph

    Capt Ralph Senior Member

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    I remember the build.
    Thx for finding this sweet ole video.
  4. cleanslate, Apr 15, 2020
    #4
    cleanslate

    cleanslate Senior Member

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    And the name?! He must be a Cat lover. Guess it likes the water.:)
  5. Oscarvan, Apr 15, 2020
    #5
    Oscarvan

    Oscarvan Senior Member

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    Very cool. Always nice to see my fellow Dutchies being stubborn. :D
  6. bayoubud, Apr 15, 2020
    #6
    bayoubud

    bayoubud Senior Member

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    Great story.
  7. YachtForums, Apr 15, 2020
    #7
    YachtForums

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  8. YachtForums, Apr 15, 2020
    #8
    YachtForums

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    Octopussy was one of several yachts built by Staluppi, all named after James Bond movie titles.
  9. ychtcptn, Apr 17, 2020
    #9
    ychtcptn

    ychtcptn Senior Member

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    This was the first Mega-yacht I ever went on, was lucky enough to be able to go on a Sea Trial out of Palm Beach one day.
    A friend of mine was a deck hand aboard and they chartered the daylights out of her in the Med. He told me they would do 3-4 ports in a day due to the speed.
  10. Oscarvan, Apr 17, 2020
    #10
    Oscarvan

    Oscarvan Senior Member

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    I know the old "If you have to ask..."

    I'd still interested to know what it burns at 50 kts......
  11. rtrafford, Apr 17, 2020
    #11
    rtrafford

    rtrafford Senior Member

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    Just using basic interpretive calculations, you'd estimate roughly 800 gallons per hour WOT based upon 10,500 HP.
  12. Ken Bracewell, Apr 17, 2020
    #12
    Ken Bracewell

    Ken Bracewell Senior Member

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    I'm not sure about the 396s, but on a 50m Westport with twin 16V4000s (roughly 3800HP each) we would burn about 330gph at 90%. So I would guess between 450-500 gph
  13. Capt Ralph, Apr 17, 2020
    #13
    Capt Ralph

    Capt Ralph Senior Member

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    1/10 gallon per HP per hour / 2 for medium to large turbo diesels.
    This is a good (crude) rule I have used.
    On boats with flow scans in good shape, you can figure your HP curve working backwards.
    Still crude but does offer a curve.

    lets try it; 10,500 hp / 10 = 1050..
    1050 / 2 = 525.

    Yep, Kens numbers are close.
    450-500GPH would be a good fast cruise sense you can't stay at WOT all day.

    Is there an exact MTU engine model number out there somewhere?
    Wonder what's its mean time between rebuilds has been? Hope they built in a nice sized engine room.
  14. rtrafford, Apr 17, 2020
    #14
    rtrafford

    rtrafford Senior Member

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    Yeah, I grabbed the wrong multiplier (used gas not diesel). It's roughly .058 gallons per hour per horsepower. So, 609 for 10,500?
  15. rtrafford, Apr 17, 2020
    #15
    rtrafford

    rtrafford Senior Member

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    16V 396 TB94
  16. rtrafford, Apr 17, 2020
    #16
    rtrafford

    rtrafford Senior Member

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  17. Ken Bracewell, Apr 17, 2020
    #17
    Ken Bracewell

    Ken Bracewell Senior Member

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  18. rtrafford, Apr 17, 2020
    #18
    rtrafford

    rtrafford Senior Member

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    Good to leave wire behind to later use to pull new exhaust lines.

    We pulled a literal mountain out and still don't have all removed. Several generations of refits left behind.
  19. YachtForums, Apr 17, 2020
    #19
    YachtForums

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    The Millennium 140’s 65+knot performance is provided by two Paxman 18-cylinder main diesel engines for a combined 10,870 hp, with twin TF80 Lycoming turbines adding 9,200 hp. These four powerplants drive a system of 3x Lips waterjets, which begs the question... what's the gas mileage? Well... fuel capacity is 15,000 gals. and the maximum range is estimated at 3,800 nm. Ignite the turbines... and your mileage may very!
  20. Capt Ralph, Apr 17, 2020
    #20
    Capt Ralph

    Capt Ralph Senior Member

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    Against the pins long after the torque curve starts diving, your just pouring in and burning fuel.
    At 609GPH, I can imaging just burning fuel and near dark exhaust color.

    For the weight, probably cheaper to own a 747.
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