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Old 22-03-2010, 13:07   #1
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No Reverse Steerage Common ?

My 40' trimaran doesn't steer in reverse. Rudder angle doesn't seem to make any difference. It's just a slow creep to port from what I assume to be the prop wash. Is this common in big boats and what do people do to work around the problem of not being able to steer in reverse ?

-tavis
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Old 22-03-2010, 13:41   #2
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Tavis, this is not uncommon. It varies from boat to boat. Typically as your sternway increases, some steerage control is regained. Often, once you get sternway, you can put the engine in neutral to gain a degree of steerage. Slowly add power in short bursts to increase sternway. Alternatively, you must give brief bursts of forward power with your rudder hard over to whichever side you need. The trick is to not use forward power so long or strong that you kill all headway. It's practice thing.

Some boats are real buggers and others not so much.
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Old 22-03-2010, 13:42   #3
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Yes! Until you get flow over the rudder in any boat, you will not have steerage. Response will be dependent on rudder size and speed in reverse. It is best to hit the trottle to get way in reverse and then coast.
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Old 22-03-2010, 14:09   #4
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LOL, that's what the bow thruster is for.
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Old 22-03-2010, 19:10   #5
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The best way to figger this out....is to go to an area that is calm and practice and see what the boat does in reverse and various throttle speeds.
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Old 22-03-2010, 19:21   #6
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Fin keel and spade rudder far aft ... otherwise you are in for a challenge. The other variable is the wind which blows the bow down (I suppose this is true for a tri?) so backingand turning into the wind is often easier, if you got the choice.

Some spade rudder tiller boats can turn the rudder 360. We could back into a slip without engine. Yes, showoff stuff, and it usually didn't entirely work out.
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Old 23-03-2010, 02:44   #7
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my mono seems to have no steerage in reverse until about 1.7 kts
This looks and feels surprisingly fast as my brain wants to go slow when going backwards!
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Old 23-03-2010, 03:06   #8
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Simple really. A burst of reverse to get moving then out of gear so prop walk is not there then a burst of forward to start the turn to where you want to go. I can turn my boat in its own length this way. As said by earlier posters it is all about practice to get the feel of your boat.
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Old 24-03-2010, 01:23   #9
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Thanks for all the tips. Turns our part of the problem was probably this :
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Old 24-03-2010, 01:45   #10
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Uh....yeh....that might make a difference!
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Old 24-03-2010, 02:31   #11
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Hmm.. I might agree with James S on this one - and how was it like going forward???
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Old 28-03-2010, 22:35   #12
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Is it those barnacles on the prop that are causing the problem???
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