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08-27-2018, 08:17 PM
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#1
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Guru
City: Sharon, Ma
Vessel Name: Slow Lane
Vessel Model: 2005 Silverton 35 Motoryacht
Join Date: May 2017
Posts: 1,167
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Mainship 400 trawler articulating rudder?
Guys, some of the Mainship 400's that are for sale have added an articulating rudder. Can someone explain what these are and the benefits?
On a single engine 400 trawler with only a bow thruster would the articulating rudder be as useful as a stern thruster would? Or is it still more desirable to have the bow and stern thruster?
__________________
Jason
2005 Silverton 35 Motoryacht
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08-27-2018, 08:54 PM
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#2
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Valued Technical Contributor
City: Litchfield, Ct
Join Date: Aug 2012
Posts: 6,786
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The articulating rudder replaces the single flat rudder with one with two segments. This creates a sort of curved surface when the rudder is turned hard over which gives it significantly better performance.
In the scheme of things with cost being factored in, I would want a bow thruster first, a stern thruster second and an articulating rudder third. But two and three are pretty close.
David
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08-27-2018, 10:56 PM
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#3
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Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
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I think I agree with David, although I’ve never had an articulating rudder. I have a bow and stern thruster but would really love to add an articulating rudder to my boat.
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08-28-2018, 12:43 PM
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#4
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Guru
City: Sharon, Ma
Vessel Name: Slow Lane
Vessel Model: 2005 Silverton 35 Motoryacht
Join Date: May 2017
Posts: 1,167
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Quote:
Originally Posted by dhays
I think I agree with David, although I’ve never had an articulating rudder. I have a bow and stern thruster but would really love to add an articulating rudder to my boat.
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Yes, I definitely want a stern thruster on my "new" boat.
Okay, the consensus is that an A.R won't "replace" a stern thruster but is a complement. Good to know.
__________________
Jason
2005 Silverton 35 Motoryacht
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08-29-2018, 11:08 AM
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#5
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TF Site Team
City: Westerly, RI
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 4,162
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http://www.trawlerforum.com/forums/s...01-a-7237.html
The last YouTube video does a good job of showing the practical application and benefits IMHO.
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08-30-2018, 07:51 AM
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#6
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Guru
City: Sharon, Ma
Vessel Name: Slow Lane
Vessel Model: 2005 Silverton 35 Motoryacht
Join Date: May 2017
Posts: 1,167
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Thanks guys. Shrew, that last video is amazing.
__________________
Jason
2005 Silverton 35 Motoryacht
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08-30-2018, 11:39 AM
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#7
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TF Site Team
City: Westerly, RI
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 4,162
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Honestly, you can get a tighter turning radius using the 'bump and fill' method, even without a bow thruster.
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08-30-2018, 12:36 PM
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#8
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Senior Member
City: Wrightsville Beach, NC
Vessel Name: Time & Tide
Vessel Model: 2005 34T Mainship
Join Date: Jan 2016
Posts: 195
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Bayview Engineering (BEI) articulated rudders
Does anyone know if this company is still in business?
A google search of Bayview Engineering ( http://www.bayviewengineeringind.com) leads to a blank web page.
Thanks,
Todd
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08-30-2018, 12:40 PM
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#9
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Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
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Quote:
Originally Posted by Shrew
Honestly, you can get a tighter turning radius using the 'bump and fill' method, even without a bow thruster.
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In one direction. I can turn my boat on a dime to starboard doing that. Not so much to port.
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08-30-2018, 02:31 PM
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#10
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TF Site Team
City: Westerly, RI
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 4,162
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Quote:
Originally Posted by dhays
In one direction. I can turn my boat on a dime to starboard doing that. Not so much to port.
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True. My prop is turning the other way. I turn tightly to port and prop walk in reverse to Stbd.
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08-30-2018, 03:10 PM
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#11
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Senior Member
City: Gig Harbor WA
Vessel Name: Salty
Vessel Model: American Tug 34
Join Date: Oct 2008
Posts: 381
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Quote:
Originally Posted by South of Heaven
Guys, some of the Mainship 400's that are for sale have added an articulating rudder. Can someone explain what these are and the benefits....
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I’ve installed BEI rudders on my last two trawlers. My current boat, a 47’ Selene, is equipped with bow and stern thrusters—very useful in getting the boat to move those last few feet to the dock; and to keep it there when wind is blowing you off/away from the dock. But nothing compares to the dramatic performance I get from the AR for close quarters maneuvering. I can turn 180 degrees in my own boat length without back-and-fill. So many other examples but no need to go into those here. You can reach Ron and Carol at BEI @ (360) 920-9459.
__________________
Richard Soto, Whidbey Island WA
American Tug 34
Selene 47
Willard 40
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08-30-2018, 09:33 PM
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#12
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Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
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Quote:
Originally Posted by nwboater
I’ve installed BEI rudders on my last two trawlers. My current boat, a 47’ Selene, is equipped with bow and stern thrusters—very useful in getting the boat to move those last few feet to the dock; and to keep it there when wind is blowing you off/away from the dock. But nothing compares to the dramatic performance I get from the AR for close quarters maneuvering. I can turn 180 degrees in my own boat length without back-and-fill. So many other examples but no need to go into those here. You can reach Ron and Carol at BEI @ (360) 920-9459.
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Great endorsement. Any idea what the rough cost would be on a boat like your Selene?
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08-31-2018, 08:26 PM
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#13
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Guru
City: Carrabelle, FL
Vessel Name: Morgan
Vessel Model: '05 Mainship 40T
Join Date: Jan 2008
Posts: 2,162
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Meh. Just buy one with twins.
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10-08-2018, 09:41 AM
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#14
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Senior Member
City: Gig Harbor WA
Vessel Name: Salty
Vessel Model: American Tug 34
Join Date: Oct 2008
Posts: 381
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Quote:
Originally Posted by dhays
Great endorsement. Any idea what the rough cost would be on a boat like your Selene?
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Cost of the new rudder was $6800, plus labor...we did the install when the Selene was on the hard for another project so labor was not much...maybe $1000 to drop the original and install the new one.
__________________
Richard Soto, Whidbey Island WA
American Tug 34
Selene 47
Willard 40
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10-09-2018, 12:28 PM
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#15
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Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
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Quote:
Originally Posted by nwboater
Cost of the new rudder was $6800, plus labor...we did the install when the Selene was on the hard for another project so labor was not much...maybe $1000 to drop the original and install the new one.
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Thanks.
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