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02-25-2018, 10:13 PM
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#1
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Guru
City: Boston Area
Join Date: Feb 2017
Posts: 2,610
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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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02-25-2018, 11:01 PM
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#2
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Guru
City: St Augustine,Fl
Join Date: Sep 2009
Posts: 3,796
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very common type of rudder.Back edge adds resistance.
__________________
Jack ...Chicken of the sea! Been offshore 3 miles once
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02-25-2018, 11:08 PM
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#3
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Guru
City: Boston Area
Join Date: Feb 2017
Posts: 2,610
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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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02-25-2018, 11:15 PM
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#4
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Senior Member
City: NW Washington State
Vessel Name: Kingfisher
Vessel Model: 37' converted gillnetter/crabber
Join Date: Oct 2017
Posts: 442
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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
__________________
Anson & Donna
Be kind whenever possible. It is always possible. ~The Dalai Lama
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02-25-2018, 11:16 PM
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#5
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Guru
City: Kitimat, North Coast BC
Vessel Name: Badger
Vessel Model: 30' Sundowner Tug
Join Date: Jul 2012
Posts: 5,946
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Try googling fishtail or Schilling rudders for more refined examples.
__________________
"The most interesting path between two points is not a straight line" MurrayM
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02-25-2018, 11:17 PM
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#6
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Guru
City: Kitimat, North Coast BC
Vessel Name: Badger
Vessel Model: 30' Sundowner Tug
Join Date: Jul 2012
Posts: 5,946
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Quote:
Originally Posted by Sabre602
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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Speedy dude, aren’t you
__________________
"The most interesting path between two points is not a straight line" MurrayM
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02-25-2018, 11:56 PM
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#7
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Senior Member
City: NW Washington State
Vessel Name: Kingfisher
Vessel Model: 37' converted gillnetter/crabber
Join Date: Oct 2017
Posts: 442
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Quote:
Originally Posted by MurrayM
Speedy dude, aren’t you
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Great minds think alike!
__________________
Anson & Donna
Be kind whenever possible. It is always possible. ~The Dalai Lama
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02-26-2018, 12:35 AM
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#8
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Guru
City: Campbell River
Vessel Name: Blue Sky
Vessel Model: Nordic Tugs 42 Hull #001
Join Date: Oct 2007
Posts: 1,972
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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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Conrad
Berthed in
Campbell River BC
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02-26-2018, 01:00 AM
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#9
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Guru
City: Port Townsend and La Paz
Vessel Name: Domino and Libra
Vessel Model: Malcom Tennant 20M and Noordzee Kotter 52
Join Date: Feb 2014
Posts: 984
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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.
__________________
Bill
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02-26-2018, 01:24 AM
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#10
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Master and Commander
City: Vallejo CA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 12,559
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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.
__________________
Kar-KEEN-ez Koot
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02-26-2018, 04:55 AM
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#11
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Guru
Join Date: Oct 2007
Posts: 22,553
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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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02-26-2018, 10:29 AM
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#12
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Guru
City: Boston Area
Join Date: Feb 2017
Posts: 2,610
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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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