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Old 02-25-2018, 10:13 PM   #1
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Strange looking rudder...

So I am looking through Yachtworld at Island Gypsies... and I see a 1986 32 footer that looks nice.....and I see the picture below ?? It looks like the trailing edge of the rudder is bent 90 degrees !?!?! Is that possible ? Am I not seeing it right ? Has anyone seen this before ?

Here is a link to the ad:

1986 Island Gypsy Sedan Trawler (Hull #58) Power Boat For Sale -
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Old 02-25-2018, 11:01 PM   #2
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very common type of rudder.Back edge adds resistance.
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Old 02-25-2018, 11:08 PM   #3
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but isn't resistance bad for speed and fuel consumption ? ...and this seems like it would make the boat pull to one side.??

( and thanks for responding )
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Old 02-25-2018, 11:15 PM   #4
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Google "fishtail rudder" or "Schilling rudder."

Then watch the YouTube video of this single-engine trawler with one....

https://youtu.be/rhDopwxTCbg
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Old 02-25-2018, 11:16 PM   #5
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Try googling fishtail or Schilling rudders for more refined examples.
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Old 02-25-2018, 11:17 PM   #6
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Quote:
Originally Posted by Sabre602 View Post
Google "fishtail rudder" or "Schilling rudder."

Then watch the YouTube video of this single-engine trawler with one....

https://youtu.be/rhDopwxTCbg
Speedy dude, arenít you
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Old 02-25-2018, 11:56 PM   #7
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Quote:
Originally Posted by MurrayM View Post
Speedy dude, arenít you
Great minds think alike!
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Old 02-26-2018, 12:35 AM   #8
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We had a similar feature on our last boat's rudder. The previous owner had added it for better slow speed control, and it apparently helped quite a bit.
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Old 02-26-2018, 01:00 AM   #9
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Libra has one of these rudders. It expect it takes a bit to get 65 tons to start to rotate and this thing is up to it. Quite helpful.
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Old 02-26-2018, 01:24 AM   #10
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Propeller walk with my unbent rudder requires a three-degree rudder to port to maintain a straight course. Perhaps your bent rudder compensates for that.
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Old 02-26-2018, 04:55 AM   #11
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When the rudder is too small for good low speed handling a T installed on the end helps a great deal.

Some will use a diamond shape created from 2 90deg sections of angle iron bolted on.
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Old 02-26-2018, 10:29 AM   #12
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Thanks everyone. I had thought the rudder was not symetrical, and was like a backwards capital letter L ( with a very small bottom piece ) but it must be a fisht tail shape that just doesn't show up well in the photo. Thanks everyone!
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