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Old 01-05-2013, 03:24 PM   #21
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Steve: Glad I could help. If you make them out of Al. Put a bushing on the outrigger at the tab from where the fish hangs. We almost lost the fish because of wear. We had a metal shop fill the hole, re-drill and add a SS bushing. The tabs are 1/2" Al. This was the only wear point.
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Old 01-05-2013, 04:09 PM   #22
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Nice job with the description and photos Larry, thanks

One thing that's not obvious in the photos (of the Nordic, Krogen, or Volunteer) is some form of hold-down for the poles. If you take a huge roll and the upper vane unloads the pole can flop inboard with a crash....... The commercial guys in BC use two pieces of pipe in a scissor arrangement off the mast, which is clear of everything. Beebe advocated a tackle to an eye down near the waterline which is less desirable.
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Old 01-05-2013, 06:59 PM   #23
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Originally Posted by Tad Roberts View Post
Nice job with the description and photos Larry, thanks

One thing that's not obvious in the photos (of the Nordic, Krogen, or Volunteer) is some form of hold-down for the poles. If you take a huge roll and the upper vane unloads the pole can flop inboard with a crash....... The commercial guys in BC use two pieces of pipe in a scissor arrangement off the mast, which is clear of everything. Beebe advocated a tackle to an eye down near the waterline which is less desirable.
The entire fish would need to come out of the water for this to happen... could it..possibly... likelihood.. not too much. Mine had no hold downs and there was never an issue.. Keep in mind the commercial guys will deploy the poles without vanes as the poles alone will help slow the roll when they work in the trough, for this you need to be able to lock them down.
I had the boat in BIG water a couple of times that I never want to experience again.. on anything less than 200'...Para vanes work great.. they rarely fail and need little maintenance. My next boat will have vanes unless the P.O. has paid for the cost of a active system. One thing I want to research is a system that allows the fish to be pulled without completely stopping the boat and lifting the poles
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Old 01-05-2013, 07:19 PM   #24
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have a look at this Nordhaven 46 stabilizer system. Its my favorite design.

Paravanes
Flopper Stoppers
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Old 01-06-2013, 06:46 AM   #25
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Originally Posted by Tad Roberts View Post
One thing that's not obvious in the photos (of the Nordic, Krogen, or Volunteer) is some form of hold-down for the poles. If you take a huge roll and the upper vane unloads the pole can flop inboard with a crash....... The commercial guys in BC use two pieces of pipe in a scissor arrangement off the mast, which is clear of everything. Beebe advocated a tackle to an eye down near the waterline which is less desirable.
We have no hold downs for the poles. I have seen the scissor arrangement on commercial vessels and they look interesting. Beeb's "tackle to an eye", I don't think would be affective for us. The bracket that holds the poles at the hull is only 32" above the water line. It might be an easy mod for some Nordhavens. Some of the poles are attached at the hull 6 or 7 feet off of the water.


We have had the fish come out of the water though on probably 6-8 different days all on similar sea conditions. We would be running in large beam seas with wind driven waves on top. Hobo would be on the crest and would roll/twist as the wave/swell would pass under us. As this happens, the fish and Hobo are not tracking parallel and rarely, the windward fish would "pop" out of the water maybe a foot. The fishes re-entry is surprisingly smooth but it still "rattles" the poles a bit as well as ourselves. If it continues we head off or slow down. The poles have never moved and I hope, we are never in sea conditions that they do.
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Old 01-06-2013, 06:55 AM   #26
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...Para vanes work great.. they rarely fail and need little maintenance. My next boat will have vanes unless the P.O. has paid for the cost of a active system. One thing I want to research is a system that allows the fish to be pulled without completely stopping the boat and lifting the poles
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Hollywood: I agree on how great paravanes are.

Let me know if you find a way to retrieve the fish without completely stopping. We can deploy and retrieve the fish with the poles out.
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Old 01-06-2013, 03:10 PM   #27
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FWIW here are some cell phone shots I just took of the Nordhavn 46 that moved into a slip on the new G-dock across from us. To say its paravane system is well-designed and strong enough for the job is an understatement. Perhaps the layout will give others on this thread some ideas.



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Old 01-06-2013, 05:04 PM   #28
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Always nice to look at other systems, thanks. Storage of the fish could use some improvement on the Nordhaven though.
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Old 01-06-2013, 06:04 PM   #29
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Hopefully sometime early this year I will be going thru the process of fitting a set of paravanes to Tidahapah.
I presently have aluminium arms with flopper stoppers but want to upgrade to full paravanes.
There is also the possibility of fitting a sailing rig.
I will see how things go and if it goes ahead will document it.
There are some very early posts re paravanes and I have some printed documents re the set up etc for paravanes.
These are on another computer at home.
Should have them available when I get home from work in about 3 weeks.
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Old 01-06-2013, 08:35 PM   #30
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Hollywood: I agree on how great paravanes are.

Let me know if you find a way to retrieve the fish without completely stopping. We can deploy and retrieve the fish with the poles out.
The system described in post 24 can also be deployed and retrieved underway
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Old 01-06-2013, 11:05 PM   #31
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Originally Posted by Tad Roberts View Post
One thing that's not obvious in the photos (of the Nordic, Krogen, or Volunteer) is some form of hold-down for the poles. The commercial guys in BC use two pieces of pipe in a scissor arrangement off the mast, which is clear of everything.
In case anyone is wondering what Tad is talking about, here's an example of scissor holddowns on a BC troller's poles:

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Old 01-07-2013, 06:15 AM   #32
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Should one snag the bottom or a log or a sea land container , something has to let go.

Good design would suggest that what lets go is easy and cheap to replace.

A piece of line would seem ideal . Inspect the various designs to see what the break point is.
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Old 01-16-2013, 04:23 AM   #33
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When I built my poles they fold back not up used 10 ft aluminum square tubing. My biggest problem was harmonic vibration solved the problem with a rubber gasket on the hinge. I manual retrieve the fish with a boat pole walking them back to the stern at slow speeds.
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Old 01-16-2013, 10:45 AM   #34
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The Paravanes on my boat look home made.
I will take some pictures of the set up this weekend and post them on monday.
A simple set up.
The biggest issue I can see is a way to store the poles.
You are going to need some sort of mast to hook them onto when not deployed.

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Old 01-16-2013, 12:17 PM   #35
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You are going to need some sort of mast to hook them onto when not deployed.

We prefer to lay them down as the air height of the boat determines weather you slip under a bridge , or wait for the next hour or the train to go by.
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Old 02-09-2013, 11:37 AM   #36
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Hi. Have you made any progress on your project yet?? I am thinking about doing the same thing with my 35 sundeck. I think the biggest problem I see so far is location front to back. Terry in Alaska.
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Old 02-09-2013, 01:50 PM   #37
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This visiting recreational trawler transited from the PNW to California had a paravane rig.



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Old 02-09-2013, 02:28 PM   #38
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I'd suggest anyone adding paravanes read the Transport Canada Safety bulettin on the issue.

The purpose of this Transport Canada Ship Safety Bulletin is to caution the operators of vessels which are equipped with this type of roll damping system against the hazards associated with their use such as, reduction in vessel's stability, system failure from poor maintenance and operational hazards. read more
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Old 02-09-2013, 05:46 PM   #39
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Well I have removed the poles for my flopper stoppers and am in the process of having fabricated / modified a set of s/s paravane poles.
The originals came of a sister boat belonging to a mate of mine.
he has upgraded his sail rig and paravane set up.
I have 2 sets of fish that I will play with when the time comes.
I am still looking for a 2 nd had rig to fit the boat.
It may be ketch riged or just a main mast and then a gallows set up for the paravane mount.
All still in planning , pre build stage at present.
Off to NZ tomorrow for the Napier Art Deco festival and a bit of trout fishing and then back to work.
Will continue with the project late March when I am home again.

Mark, that is a nice looking little boat but would rather see the poles mounted from the moulding (rub rail) than the cap rail. Would make the set up a lot stronger. Normally the moulding is thru bolted in the deck beam so a lot of inherent strength is built in.
Just my 2cs worth
Cheers
Benn
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Old 02-11-2013, 06:58 AM   #40
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If you take a huge roll and the upper vane unloads the pole can flop inboard with a crash....

This is easily solved by angiling the pole up from fairly horizontal.

Sure it might reduce the effective length a small bit but the foreguy and afterguy will work as a down haul since they have an effective working angle .
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