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Offshore vs. McKinna?

Discussion in 'McKinna Yacht' started by KonaLA, Jun 5, 2009.

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  1. PacBlue

    PacBlue Senior Member

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    In that size range, I lean towards a 55 Fleming, but this is a much more traditional look. Their new 58 looks very impressive.

    I would like to know more on the origin/design of the 57 McKinna, was it their design from day one or was it a pre-existing overseas hull that has been absorbed into the McKinna line? Not too crazy about the sheerline/superstructure profile, but that is my taste. I do like their updated looks on the 60'+ models.
  2. Worthyvess

    Worthyvess Member

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    Thank you so much! What is COG?
  3. PacBlue

    PacBlue Senior Member

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    Center Of Gravity
  4. bobhorn

    bobhorn Member

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    Could also be 'Course over ground'

    Bob
  5. Capt J

    Capt J Senior Member

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    The 57' should ride ok, as the 65 was the same hull except stretched at the rear (I'm pretty sure) and when they did that they created too much bouyancy in the rear, causing it to ride bow down.

    The fuel system was also goofy. The generator pickup was too high and at half a tank it would suck air and shut off. The boat had 2 tanks for each side, with an equalizing valve to join them together. Most owners would leave these valves open for convenience, however they did had a transfer pump to pump from the rear tank to the foward tanks if you had the valve closed. The problem was they put the pickups on the foward tanks and when running, the fuel would shift to the aft tanks, so once you got under 40% total fuel it would suck air also. So you had to remember to close the valves on trips, then transfer fuel, but then had to open them so the foward tanks filled with fuel when you were fueling. Then to get to the valves, they were in a tough spot on the outbound side of the engines which was ALWAYS fun after running at cruise for a day.

    The other issue on the one I ran was it had an inverter/charger for the entire boat, BUT, both AC and DC power ran through it. Well if the shorepower breaker tripped and you ran the batteries below 21 volts, the inverter would not turn on to charge the batteries, and you had no AC power throughout the entire boat either, except for the air conditioners which were on a seperate circuit. We installed a stand alone 24 volt charger to bring the batteries up for that situation.

    Bow thruster was undersized also.

    Very little engineering brain power went into the boat.
  6. Worthyvess

    Worthyvess Member

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    Thank you so much for all that info... Fleming is out of our reach, and I think more of a trawler. The search continues!
  7. jrs1958

    jrs1958 New Member

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    What year was the boat?
  8. Capt J

    Capt J Senior Member

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    I think it was a 2001 with Cat's. I managed it for the first owner, then a little bit for the second owner, then did some more work on it for the third owner who went through and did a lot of stuff to it.
  9. jrs1958

    jrs1958 New Member

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    D
    didn't the inverter have a separate charge mode? My inverter will either invert or charge not both at the same time.
    Too bad these issues, with the fuel tanks. I was going to look at a 1999 57' but may pass now.
  10. jrs1958

    jrs1958 New Member

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    Talked to mckinna. The 57 had 1 fuel tank per side so that was not an issue.
  11. Capt J

    Capt J Senior Member

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    The inverter is also the charger, but will not power on if the voltage is below 21.5 volts at all, so therefore it won't charge the batteries either. This boat had 4 fuel tanks, 2 in front of the motors, and 2 on the outbound sides of the motors.

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