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Go Back   SailNet Community > On Board > Gear & Maintenance > Does a bow thruster slow you down?
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Thread: Does a bow thruster slow you down? Reply to Thread
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Topic Review (Newest First)
11-14-2010 08:25 PM
PorFin Don't have one, but there have been many times I wished we did. Full keeled cruiser, 28K lbs loaded, pretty high freeboard, roller furled genoa and a boom flaked staysail -- it all adds up to "high adventure" when maneuvering in close qtrs. I'd happily trade off the minor loss in speed for the reciprocal loss in anxiety. Just saying.
11-14-2010 07:37 PM
MJBrown We have a bow thruster on our 43'er which was factory installed, so I do not have a before and after speed comparison. I will say that it might have a slight impact as after all there is a hole in the hull which is likely to impact water flow past the bow. That said I have no problem exceeding hull speed so any difference it might make I could care less about. As for it being a new trend I for one love having it. Yes it becomes pretty much useless in winds above 15kts but it certainly is more of a help than hinderance. I'm one of the people who use it as a rudder which adds to the ability to put the boat just about anyplace. Combine it with prop walk and you can just about spin it on it's axis. It's the same principle the Dock and Go systems are using. I also occasionally dock without it just to avoid total dependency on it. I have had the thermal fuse trip on it docking in heavy winds so it's best to keep the docking skills sharp. Bottom line is it's a great addition which I wouldn't be without.
11-14-2010 07:03 PM
BigZ But that is a good point, no?
11-14-2010 06:43 PM
mitiempo Yes, but the anchorages would be less crowded.
11-14-2010 06:21 PM
BigZ
Quote:
Originally Posted by deniseO30 View Post
technology is creating a whole new generation of the helpless. Did it all start with the TV remote control? cars and boats now can self park (if you get the option$ included)
Technology also brought to sailing things like roller furling and cheap GPS. Take both of these things away from current sailors and how many would continue with the activity?
11-14-2010 01:21 PM
jrd22
Quote:
Originally Posted by Minnewaska View Post

Ironic that you've suggested oohs and ahhs from onlookers, when most criticize them as cheating. Your thread has already solicited some of that sentiment.
Just disguised jealousy Minne, I wouldn't pay any attention .

I really can't imagine that there could be a noticeable loss of performance except in an all out racing boat. I know for a fact that I avoid going into some places because of the lack of maneuverability, but boats with bow thrusters are able to whip in and out seemingly without a thought.
11-14-2010 12:20 PM
Minnewaska I can't say I've ever noticed a difference, certainly not one that isn't far overwhelmed by sail selection or trim.

Ironic that you've suggested oohs and ahhs from onlookers, when most criticize them as cheating. Your thread has already solicited some of that sentiment. However, I invite anyone one of them to back my 45,000lb, 54ft boat into its slip with a 15kt crosswind, raised deck and my neighbor about 5 ft off the other side, without one.

I will acknowledge that it shouldn't require non-stop adjustments, which do make it seem like the captain doesn't quite have control. A bit to offset prop walk when getting into reverse, if you don't actually desire the prop walk for the circumstance. Then a bit more to push the bow into the wind and make a nice turn into a crosswind slip, should be all it needs.

That said, I have a friend who swears that, when in reverse, the thruster is now the rudder. He keeps the helm centered and steers with the thruster. Personally, I don't consider that cheating, while it isn't quite my method.

p.s. raise that crosswind to 20+kts and my boat can't be held or turned against the crosswind in reverse, even with the thruster running non-stop.
11-14-2010 10:39 AM
deniseO30 technology is creating a whole new generation of the helpless. Did it all start with the TV remote control? cars and boats now can self park (if you get the option$ included)
11-14-2010 09:47 AM
SVAuspicious I get more glee from dock-walkers talking about how much bow thrusters help -- I don't have one!
11-14-2010 09:04 AM
deniseO30
Quote:
Originally Posted by Pub911 View Post
I even get the silent, perverse thrill of having people at the dock notice I've got a new toy.
From the few I've heard.. they are far from silent.

Do training wheels slow down bikes?

just saying..
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