OFFICIAL 390/40 Motor Yacht Thread

Discussion in 'Sport Yachts/Yachts' started by Robf, May 4, 2016.

  1. alnav

    alnav Member GOLD Sponsor

    768
    Sep 16, 2009
    West River, MD
    40 MY
    QSB 425
    I think you'll find that most any diesel boat will handle better than gas because of the greater torque provided. The 390/40 MY will be impacted by adverse winds around the dock but less so than an aft cabin with an upper bridge. I think you'd be hard pressed to find one without a bow thruster which will help. As to airflow, there is an electrically actuated window in the center of the windshield and opening side windows. With those and the side and aft doors open there is plenty of airflow on my boat. But, probably the majority of the time we operate with everything closed and enjoy the AC.
     
  2. Fin

    Fin New Member

    27
    Sep 14, 2017
    Nininger, Minnesota
    2004 Sea Ray 390 Motor Yacht
    Twin Mercruiser
    Though very new to the culture, I can offer a complete “thumbs up” to the 390MY!

    Having nothing to compare it to, I find that it is (tho intimidating at first) easy and enjoyable to pilot. The backing into the slip, docking and steerage through Lock/Dams has gone very well overall with the rare OMG instances. I love the look and feel of this awesome boat and can’t wait till next season!

    I would endorse this acquisition whole heartedly! Fin
     
  3. RIVERDAZE

    RIVERDAZE Member GOLD Sponsor

    46
    Oct 7, 2016
    Chattanooga
    2008 SeaRay 40 MY diesel
    Bow/Stern thrusters
    Raymarine E120 Radar, Autopilot, Plotter
    Cummins QSB425's
    I looked at a Carver MY in the same size range as the 40MY. Actually had a purchase offer on a Carver with Volvo diesels but bailed after a survey. Hard to find Volvo techs in my area but generally the Carver 41My was a nice lay out. I noticed when I stepped on the Carver, however it would give or tilt on my weight (200lbs) but the SR40MY hardly knew I stepped on it . Gave me the impression of being more substantial. All the fit and finish of the SR40 is very good. Well laid out and secured wiring and good access to bilge maintenance items. I liked the open aft cockpit of the Carver 41MY so will plan to get an extended swim platform for the SR 40MY, but the helm /cockpit are of the SR is quiet and like a Limo at sea. Diesel engine is the way to go for resale and electronics if older than 2005 my be subject to refit at significant expense. Good luck on the search.
     
  4. jspin101

    jspin101 New Member

    5
    Sep 26, 2017
    Boston, MA
    Boatless but looking
    Diesels
    Thanks for your replies. I have looked at a couple of 40 MY and the one we really liked had water in the bilge. The others didn't have much. Are there any issues on the 390/40 with water in the bilge?
     
  5. Fin

    Fin New Member

    27
    Sep 14, 2017
    Nininger, Minnesota
    2004 Sea Ray 390 Motor Yacht
    Twin Mercruiser
    I have had no issues nor am I aware of others having them. Good luck.

    Fin
     
  6. Fin

    Fin New Member

    27
    Sep 14, 2017
    Nininger, Minnesota
    2004 Sea Ray 390 Motor Yacht
    Twin Mercruiser
    Given that our boats are similar, what is the “engine sweetspot” for yours?

    Fin
     
  7. RIVERDAZE

    RIVERDAZE Member GOLD Sponsor

    46
    Oct 7, 2016
    Chattanooga
    2008 SeaRay 40 MY diesel
    Bow/Stern thrusters
    Raymarine E120 Radar, Autopilot, Plotter
    Cummins QSB425's
    Bone dry on mine too. Check for tub rings showing long term water ingress. Clean water no rings maybe from recent maintenance on through hull filters.
     
  8. Robf

    Robf Member

    255
    Apr 17, 2013
    Winfield, WV
    2004 390 Motor Yacht
    Twin 8.1 Mercruiser Inboards
    Congratulations on your purchase. I also have the 2004 390 MY and just completed my second season with it. I have loved the room on the boat and spending weekends on it is a pleasure. Best wishes on your boat and be happy to help in any way I can. Rob
     
    Fin likes this.
  9. Robf

    Robf Member

    255
    Apr 17, 2013
    Winfield, WV
    2004 390 Motor Yacht
    Twin 8.1 Mercruiser Inboards
    I looked at both Cruisers 405 and the Sea Ray 390 when I purchased my 390. After two seasons I must be candid and say the one thing I do not like about the boat is the completely enclosed bridge. I personally enjoy the wind and sun but didn't think I would miss it as much as I do as the opening vent in the windshield and the minimally opening side windows dont give me the airflow I would prefer. Having said that, when inclement or cold weather is around, or extremely hot, the enclosed bridge is very nice with heat and AC. I have not had any issues with the 390 as far as handling but mine has both the bow and stern thrusters. The boat rides extremely smooth and with the substantial weight of the boat breaks through wakes with no problem or pounding. I found the 405 to be much noisier at the helm than the 390 and didn't seem to be as solid overall, but that could just be the one I tested. Rob
     
  10. Fin

    Fin New Member

    27
    Sep 14, 2017
    Nininger, Minnesota
    2004 Sea Ray 390 Motor Yacht
    Twin Mercruiser
    Thank you Rob!
     
  11. Fin

    Fin New Member

    27
    Sep 14, 2017
    Nininger, Minnesota
    2004 Sea Ray 390 Motor Yacht
    Twin Mercruiser
    I would love to hear any suggestions or see photos on what you have done or added to your boat!
     
  12. Robf

    Robf Member

    255
    Apr 17, 2013
    Winfield, WV
    2004 390 Motor Yacht
    Twin 8.1 Mercruiser Inboards
    Fin
    I didn't change a lot on the boat other than upgrading things that needed improvement due to wear. I replaced all the canvas on the boat as well as upgraded the Nav. lights to LED, upgraded the speakers to JL Audio, installed a new chartplotter in place of the old GPS, and added a grill. The only major change I made was to install a separate battery bank for the generator and completely isolate it from the starting/house batteries. I would be happy to answer any questions you might have.
    Rob
     
  13. Robf

    Robf Member

    255
    Apr 17, 2013
    Winfield, WV
    2004 390 Motor Yacht
    Twin 8.1 Mercruiser Inboards
    390/40 owners, I would be curious as to what you all use for dinghy davits. Does anyone have a larger dinghy with a rigid bottom and/or center console? I would like to have a dinghy that could be used as a separate boat, however, it appears that many dinghy systems will not work on the 390 due to the water tank in the rear of the boat or the short depth of the swim platform. I would be interested in solutions you may have come up with including pictures.
    Rob
     
  14. cruiser

    cruiser Member

    105
    Feb 27, 2007
    Monmouth County NJ
    370 DA 1995, Raytheon radar, Garmin 232 gps, West Marine 9'4" dinghy,Mercury 4HP 4 stroke, Hurley da
    7.4L Bluewaters
    Hi all, Sold our 370 DA and are in the market for a 39/40 MY. I know the potential issues with the 480CE in regards to over-propping,cooling maintenance etc. But can't find much about the QSB 425. Anything specific to look for ? TY
     
  15. alnav

    alnav Member GOLD Sponsor

    768
    Sep 16, 2009
    West River, MD
    40 MY
    QSB 425
    The QSB engines seem to be fairly clear of some of the horror stories heard about other engines. I think you want to check on the service history just like you would for any engine. There is a potential for major problems if aftercooler maintenance has not been done regularly or properly so I think that needs to be a focus. If you get to the purchase process on one, I would include an either an inspection by Cummins or a qualified engine surveyor.
     
  16. Robf

    Robf Member

    255
    Apr 17, 2013
    Winfield, WV
    2004 390 Motor Yacht
    Twin 8.1 Mercruiser Inboards
    If you are considering gas engines in your future 390 as well as diesel, give me a shout. I have actually been considering going the trawler route but my 390 is pristine and freshwater with low hours.
    Rob
     
  17. renaudgil

    renaudgil New Member

    6
    Jun 5, 2016
    Britt, Ontario, Canada
    390 Motor Yacht 2004. Use Navionics on our tablet. More detailed then the Raymarine.
    Twin 488 Cummins Diesel
    Hi We have the dinghy caddie. It is made and sold in Midland, Ontario. We get a lot of inquiries.
     
  18. Fin

    Fin New Member

    27
    Sep 14, 2017
    Nininger, Minnesota
    2004 Sea Ray 390 Motor Yacht
    Twin Mercruiser
    Rob

    What Grill did you get and where did you mount it?

    Fin
     
  19. Fin

    Fin New Member

    27
    Sep 14, 2017
    Nininger, Minnesota
    2004 Sea Ray 390 Motor Yacht
    Twin Mercruiser
    Has anyone installed Seadek on the swim platform and steps of the 390 MY? Seadek does not have the template on file.

    Thanks

    Fin
     

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