Click for Walker Click for Abeking Click for JetForums Click for Seacoast Click for Mag Bay

Mercury Outboard Powered 65' Motoryacht (no joke!)

Discussion in 'Popular Yacht Topics' started by YachtForums, Jul 12, 2011.

  1. dennismc

    dennismc Senior Member

    Joined:
    Jan 29, 2009
    Messages:
    1,139
    Location:
    Vancouver BC
    Contraption

    When I was in the Keys last year there was a SF Bertram, looked about 42ft, the port side running gear had been ripped off and the engine/trans off its rear mounts, original estimate 100K, ended up a lot more , I never seen so many "inspections" by mechanics and coffee discussions the day before work was to be done on something or other, Ins. Co. sure had to have deep pockets on that one.
  2. Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    12,291
    Location:
    Fort Lauderdale
    I'm guessing 75 gph (total) to push the barge at a hull speed of 8-10knots. With a 500 gallon fuel tank, 6 hours of run time, so maybe 60 NM between fuel stops, certainly not nearly enough range to make several legs of that trip, such as Clearwater to Carabelle, Marathon Key to Marco Island and others. Then from Carabelle west to Texas it's at least 60 miles between fuel stops almost the entire way. So they're either going to need 3 more 500 gallon tanks or seatow......

    The motors should still spool up to their rated top RPM, and torque band, providing they have very little pitch on the propellors.
  3. SHAZAM

    SHAZAM Senior Member

    Joined:
    Jan 26, 2008
    Messages:
    605
    Location:
    The Ghetto
    I'm baffled. Another alternative would have been to check to see if any commercial tugboats or push boats were going his way. I needed to get a non running 72' yacht from north florida to Miami a few months back, everyone who quoted me was through the roof. On a lark I called a friend who owns one of the tug boat companies on the Miami river who hooked me up with a commercial push boat that was near Jax that was about to make the trip south without a load. I ended up paying a fraction of what everyone else wanted and got my boat down here safe, secure and without OUTBOARDS!
  4. sunray09

    sunray09 New Member

    Joined:
    Feb 15, 2010
    Messages:
    11
    Location:
    London
    So much for professional courtesy...one yard owner to another...
    All of this persons knowledge and experience went into the modifications of this yacht. All predicated on one thing saving money.
    I would not want to be a customer of the person that made these decisions.
    He ran the boat aground..and is now compounding his errors by making a ridiculous repair. Not a Captain I want to sail with, or a person I would trust to
    make a repair in anything less than a survival situation.

    Sometimes...sometimes its better to pay the piper and learn your lesson.
    I would hate to be the insurance company of record for this passage.
  5. carelm

    carelm Senior Member

    Joined:
    Feb 5, 2011
    Messages:
    412
    Location:
    fairfax va
    I'm surprised this hasn't made it to the "There I Fixed It" website. It certainly qualifies it just for the sheer kludginess. The owner is probably going to pay double what the proper fix would be by the time he's done though.
  6. chesapeake46

    chesapeake46 Senior Member

    Joined:
    Jul 26, 2009
    Messages:
    1,388
    Location:
    Chesapeake Bay, Delaware Bay & S.Jersey
    You think it's insured ?
    Yard owner...... Rube Goldburg temporary repair........ oil fuel tank strapped to the aft deck.

    This guy prolly has liability only insurance and HAS to fix it himself.
    Ofcourse he CAN fix it himself.

    I agree w/Shazam, he could have come up with a better way.

    easy to say from my office chair sipping coffee........
  7. K1W1

    K1W1 Senior Member

    Joined:
    Sep 30, 2005
    Messages:
    7,390
    Location:
    My Office
    Hi,

    The Owner might have actually been better off with just one big Outboard, it doesn't take much to get a boat moving along at 8 -10 kts and if that's all he is aiming at now I am sure he could have got there with a lot less than what is strapped on aft now.

    I know of a 80m Yacht that can do 4.5 Kts on 250 kW Stern Thruster

    Maybe he is only going to run them one at a time to save fuel and prolong the life of the propulsion package.

    If anyone sees this boat get under way or hears what happened to it, please do not hesitate to let us all know :D
  8. Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    12,291
    Location:
    Fort Lauderdale
    One outboard doesn't have the torque to get something like that moving and not nearly enough maneuverability to get it from the New River where it's located to the ocean.

    I don't know, I would say that in it's normal form let's say the boat had twin 1150 hp diesels, 12 v183's. At idle and in gear I would estimate both engines (12v183's) are putting out 150hp each but a heck of a lot more torque than the mercury's and spinning much larger propellors, and only move it 7-7.5 knots.

    I would say it's going to take all 280hp each that you can safely push out of those mercury's (maybe 220hp each at a safe cruise rpm) to push the boat 8-10 knots. They also need a 55 gallon drum of mercury 2 stroke oil as well. LOL They appear to be the real deal $30k 280hp 2.5 liters that are worth $20k a piece in good running condition......so by the time the boat gets to texas, IF it gets there. You're going to have $60k in outboards that are worn out and need a rebuild.
  9. K1W1

    K1W1 Senior Member

    Joined:
    Sep 30, 2005
    Messages:
    7,390
    Location:
    My Office
    Hi,

    You might want to read up on what Torque actually is.

    Those engines will have enough torque to handle the props attached to them.

    A Schottel Pump Jet is a Centrifugal Pump, if one of those can move a boat that displaces 1000 tons at 4.5 kts 250 Hp is going to move that plastic boat.

    It might take a while to accelerate but in calm water it would probably surprise you how little power is needed to move at slow speed.
  10. Marmot

    Marmot Senior Member

    Joined:
    May 20, 2007
    Messages:
    3,320
    Location:
    9114 S. Central Ave
    Hi J,

    Where on the New River is it located?
  11. Laurence

    Laurence Senior Member

    Joined:
    Aug 30, 2006
    Messages:
    250
    Location:
    Chattanooga TN
    Texas or Bust

    WE WANT ACTION PHOTOS! LOL
  12. Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    12,291
    Location:
    Fort Lauderdale
    It's sitting at Cable Marine (west).
  13. captbpomeroy

    captbpomeroy New Member

    Joined:
    Nov 6, 2007
    Messages:
    13
    Location:
    Fort Lauderdale, FL
    Life Raft

    This has been one of the more enjoyable and entertaining posts in a while. Although torque specs, fuel tank mounting techniques and maneuvering characteristics are all important, and many of you have raised concerns and thus drawn conclusions regarding this guys grasp of reality, I want to point out that he has a very logical backup plan...the yellow life raft. Rube Goldberg? Sure. Joshua Slocum? maybe not. Safety Conscious? Absolutely! I believe that is the Toys R Us SOLAS disapproved model.
  14. Ken Bracewell

    Ken Bracewell Senior Member

    Joined:
    Feb 9, 2006
    Messages:
    1,352
    Location:
    Somewhere Sunny
    That's not a life raft. It's the emergency propulsion system! :D
  15. discokachina

    discokachina Senior Member

    Joined:
    Mar 21, 2010
    Messages:
    1,301
    Location:
    Ft. Lauderdale
    When Is He Leaving?

    Has anyone heard when he plans to leave, I want to see this!
  16. SHAZAM

    SHAZAM Senior Member

    Joined:
    Jan 26, 2008
    Messages:
    605
    Location:
    The Ghetto
    Is this vessel in it's current state insurable?
  17. Capt Bill11

    Capt Bill11 Senior Member

    Joined:
    Feb 27, 2006
    Messages:
    1,434
    Location:
    Sarasota/Ft. Lauderdale FL
    I'd be very surprised if it wasn't towed down the river.
  18. Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    12,291
    Location:
    Fort Lauderdale
    I'd be surprised if it made it down the river in any case. But they did install a bow thruster I believe on it......
  19. Capt Bill11

    Capt Bill11 Senior Member

    Joined:
    Feb 27, 2006
    Messages:
    1,434
    Location:
    Sarasota/Ft. Lauderdale FL
    I thought it had a bow thruster and they installed a stern thruster?

    I'll try and get by tomorrow for a look. :)
  20. K1W1

    K1W1 Senior Member

    Joined:
    Sep 30, 2005
    Messages:
    7,390
    Location:
    My Office
    Hi,

    Does it need to be?