Bow/stern thrusters

Discussion in 'Modifications/Customizations' started by susanandlance, Mar 19, 2019.

  1. FootballFan

    FootballFan Well-Known Member PLATINUM Sponsor

    Jun 20, 2012
    Florida
    Marquis 59
    MTU Series 60
    Not sure I agree with the statement about twin engines and no benefit from a stern thruster. I tend to think it depends very heavily on the specific make and model of the boat.

    My experiences:

    340DA - no bow or stern thrusters - never missed them. Neither were needed.

    47DB - both bow and stern. Twin engines would move the stern, but stern thruster was a definite benefit. I would NOT want a 47DB without the stern thruster

    Current boat - both bow and stern. Stern will walk like a big dog with just the transmissions. Use the Stern thruster sparingly - went a few months waiting for parts last spring - did not miss it not working.

    Guess my point is, hard to make blanket statements about the benefit of thrusters (either bow or stern) without considering the specific boat - and sometimes unique challenges that an owners slip presents.
     
    Last edited: Jun 6, 2019
    susanandlance likes this.
  2. Gofirstclass

    Gofirstclass Well-Known Member

    Apr 20, 2010
    Tri Cities, WA
    1995 550 Sedan Bridge,
    2010 Boston Whaler 130 Super Sport,
    1981 Boston Whaler 130 Sport,
    CAT 3406C's, 580hp.
    Seahawks Fan, err, I mean Football Fan,

    I guess the old disclaimer of "your mileage may vary" still applies. I haven't missed having a stern thruster on my boat because it has some pretty big props. That, and learning how to use the shifters, gets me to where I want/need to be.

    YMMV. :cool:
     
  3. susanandlance

    susanandlance Well-Known Member PLATINUM Sponsor

    Feb 10, 2011
    Florida
    2007 Sea Ray 36 Sedan Bridge
    8.1 mercruisers
    Agreed, If it's bad windy anything extra can help in a unpleasant situation …….lol Also a DB has a ton more windage than a DA has, I learned that in the first hour on my boat ;)
     
    Last edited: Jun 10, 2019
  4. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    Having now operated a few DBs and MYs with gas engines, here is my take. The gas boats do not move anywhere close to my diesel when putting it in gear. The wind plays havoc with the high profile boats. That said, the thrusters are needed much more on a gas boat than a diesel boat especially when it is windy....

    Bennett
     
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  5. susanandlance

    susanandlance Well-Known Member PLATINUM Sponsor

    Feb 10, 2011
    Florida
    2007 Sea Ray 36 Sedan Bridge
    8.1 mercruisers
    Totally agree Bennett, I can see one coming this winter for sure
     
  6. FootballFan

    FootballFan Well-Known Member PLATINUM Sponsor

    Jun 20, 2012
    Florida
    Marquis 59
    MTU Series 60
    Let me clarify. Not to be argumentative, just to clarify my point.

    On the 340 we used to own or my current boat - What ever the unpleasant situation (wind or current) a stern thruster doesn't help appreciably change anything. The stern moves with my application of transmission and throttle.

    On my current boat - the big props swinging far apart does a much better job than the stern thruster. So easy on this boat to move the stern with the transmissions - its crazy.

    On the 47DB - in my opinion you need the stern thruster. It is much more difficult for a 47DB to move the stern with the transmissions than either a 340DA or my current boat.

    So dancer and a fly bridge. My current fly bridge has significantly more windage than a 47DB. The 340 Dancer has zippo windage compared to the 47DB or my current boat. These two boats adding a stern thruster is not going to improve your life.

    Frank W weighed in on this thread about his boat - the fact that it would walk sideways if needed.

    My point is this, be careful about general statements about thrusters. It really depends on the boat, the hull, the engines and props.

    Some boats they have big impact - other boats they may not.
     
  7. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    Pretty solid info there.
    While I really appreciate having my bow thruster, I don’t see a real need for a stern thruster on my particular model boat. The stern is pretty compliant.
    But I could see where a stern thruster would be an asset on some other boats.
     

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