Dinghy Tie Downs

Discussion in 'Dinghies' started by Irie308, Apr 22, 2019.

  1. Irie308

    Irie308 Active Member SILVER Sponsor

    967
    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    are you having them custom made or building yourself?
     
  2. quality time

    quality time Well-Known Member

    Oct 30, 2007
    Upper Chesapeake Bay
    2003 480DB
    QSM11's
    Mine has the same snap shackle and you still need to take tension off or loosen the turnbuckle to release it. In other words, if the boat's pulling the dinghy down with it you won't get it free.
     
  3. Havana Shamrock

    Havana Shamrock Well-Known Member SILVER Sponsor GOLD Sponsor

    Sep 9, 2008
    Long Island. N.Y.
    2005 500DB
    Furuno Tztouch2 12” MFD x2
    Furuno NXT radar
    Furuno Navpilot
    QSM11's,
    Honda 30HP
    Sea Doo 90 HP H.O.
    Only problem again with turnbuckles is you have to be spot on with your dinghy sitting on the Davits
    My dinghy weighs 650+ lbs it’s not easy to move it an inch or two using our crane especially when the wind and waves kick up and we need to get it loaded
     
  4. Jeremygavin

    Jeremygavin Well-Known Member SILVER Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    Buying myself, the distance is close so a regular 5/16 turnbuckle will work for my setup
     
  5. Jeremygavin

    Jeremygavin Well-Known Member SILVER Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    If that is the case then I won’t go with that set up. I want to be able to break it free if needed in an emergency. The snap shackle are supposed to be able to release under tension but it sounds like they don’t. I have the parts and intend to work on it this weekend so I will report back on how I make out.
     
    Brent Nutting likes this.
  6. Jeremygavin

    Jeremygavin Well-Known Member SILVER Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    I agree that it needs to be spot on. I fitted the dingy on the lift the other night and when the lift is all the way down the dingy can just slide over the chocks and I was able to make small adjustments (1” either way)back and forth very easily. It will be more difficult if there is some wave action but I think with the lift it will work. I am heading down this weekend to work on the system so I will report back what I find.
     
  7. quality time

    quality time Well-Known Member

    Oct 30, 2007
    Upper Chesapeake Bay
    2003 480DB
    QSM11's
    Let me know what you find, maybe mine needs some maintenance since it's been on there for a few years.
     
  8. FootballFan

    FootballFan Well-Known Member PLATINUM Sponsor

    Jun 20, 2012
    Florida
    Marquis 59
    MTU Series 60
    I agree - you have to be within the adjustment range of the turnbuckles - so that is about 3 inches max.

    Agreed on the difficulty positioning with the wind blowing and the boat rocking.

    I have my line up marks when I float the dinghy on the chocks. 90+% of the time I am ok, within the 3 inches.

    If I miss it, I put the front tie down on, drop the swim platform back in the water until the dinghy starts floating - pull back on a line tied to the dinghy. In the 10% of the time I had to take this step alignment was always resolved.

    This was not the case with my previous boat. Had the same chocks and tie down system, but was much more difficult. Would spend significant time getting the dinghy lined up. Not totally sure why it was different. This swim platform is more robust, maybe that's it. I don't know for sure.
     
  9. Doc O Rock

    Doc O Rock Active Member

    299
    Mar 23, 2016
    Lake St Clair, Belle Maer Harbor
    1999 380 Sundancer
    twin 7.4 Merc
  10. Havana Shamrock

    Havana Shamrock Well-Known Member SILVER Sponsor GOLD Sponsor

    Sep 9, 2008
    Long Island. N.Y.
    2005 500DB
    Furuno Tztouch2 12” MFD x2
    Furuno NXT radar
    Furuno Navpilot
    QSM11's,
    Honda 30HP
    Sea Doo 90 HP H.O.
    Doc, I’m not here to bash your choice but if you look at the specs of your straps the WWL (working load limit)is rated at 166lbs which means it should be used to tie anything down that weighs more than 166 lbs the Working load is in the 500lb range which is the force at which any part of the assembly will fail.
    So unless your securing an air floor dinghy with no motor I’d up the rating on those straps. Unless the link is an example and not actual. Some info to help others.
     
    MonacoMike likes this.
  11. MonacoMike

    MonacoMike Well-Known Member PLATINUM Sponsor

    Sep 15, 2009
    Indiana lakes and Lake Michigan
    2000 Cruisers 3870
    8.2 Mercs
    85 Sea Ray Monaco 197
    260hp Alpha 1
  12. Jeremygavin

    Jeremygavin Well-Known Member SILVER Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    6AF69EE3-210D-4464-B5AC-A8599BF8FA21.jpeg BE1630F7-8FE2-4A90-BA46-AA7DEF78C891.jpeg I didn’t get the stern turnbuckles on yet because I need to mount new padeyes so that the stern turnbuckles are pulling the boat forward and bow is pulling it backwards. I got the bow one set up and I think it will work well. Time will tell when I am not in a quite marina if I can get it in the right position but I think I will be able to. I have a reference mark on the tube and it is only about 2” away from the hydraulic ram so if I center the mark not the ram shaft I am good. The snap shackles do release under load so I think this will work in an emergency as well.
     
    Irie308 and Woody like this.
  13. FootballFan

    FootballFan Well-Known Member PLATINUM Sponsor

    Jun 20, 2012
    Florida
    Marquis 59
    MTU Series 60
    Interesting idea. How well does it work when the tie down is taut? Will the ring you are pulling stand up to the force?
     
  14. Jeremygavin

    Jeremygavin Well-Known Member SILVER Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    Last edited: Apr 28, 2019
  15. Jeremygavin

    Jeremygavin Well-Known Member SILVER Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    CF0D02CB-C32A-4BC5-9A1D-87952A287C31.jpeg 0788B6E1-6B46-4BCF-9FAB-913BB71D543C.jpeg Here are a few pics of the stern tie downs. From a push/pull test it seems to be not going anywhere. I will see how it fairs in rough seas.
    I need to work on the pad for the motor to rest on next.
     
  16. TNT8808

    TNT8808 Active Member PLATINUM Sponsor

    423
    May 25, 2016
    West Michigan
    2008 48 Sundancer
    Cummins QSC 8.3's
    Avon Seasport 340
    40 HP Yamaha
    Looks good. I used a piece of thin starboard that I believe was about 1/4" thick. I went into the the shop at my marina to see what scrap they had lying around, and just cut it from that. I'm headed to the boat in just a bit, and will try to remember to take a pic.

    -Tom
     
  17. Jeremygavin

    Jeremygavin Well-Known Member SILVER Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    That’s exactly what I made last week at home . I just got it mounted

    FFBFF989-3DDE-4AF8-A4AF-3B00B2A13A2F.jpeg
     
  18. flyboycj84

    flyboycj84 Member

    68
    Feb 20, 2014
    Merritt Island FL
    2008 Meridian 391
    QSB 5.9

    Great setup. Do those tiedowns have to be tightened with the turnbuckle every time you connect them? Or do the snap shackles tighten things up when you close them?
     
  19. Jeremygavin

    Jeremygavin Well-Known Member SILVER Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    The turnbuckles have to be loosened a bit and then tightened back up with the turnbuckle each time. I do 95% tightening by hand and then give it a turn with a wrench that fits on the turnbuckle.
     
  20. FootballFan

    FootballFan Well-Known Member PLATINUM Sponsor

    Jun 20, 2012
    Florida
    Marquis 59
    MTU Series 60
    I just hand tighten. Never had an issue on current boat or previous boat.
     

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