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Leak in Centerboard Lifting Tackle Hose

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dubedoo
1st Mate

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68 Posts

Initially Posted - 05/05/2004 : 00:11:17

This forum is terrific; what a resource. Your shared knowledge, experiences & ideas have already been a big help. Thank you!

Has anyone else had water come into the boat through the 2" diameter hose that the centerboard lifting line comes up through (up above the brass turning ball)? How high does the hose extend above the cabin floor on other boats? Last year was our first year with the boat (hull #702). Each time we had the boat out I noticed water on the carpet behind the steps. Last weekend we got out for the first time this year. Before going out I had removed the vinyl cover from around the centerboard lifting tackle (behind the steps). When I went down into the cabin I was surprised to find water gushing (gushing like spurting) into the cabin up through the hose. This occurred while motoring and I did not notice it occuring while sailing.? Much more water this time than previously noted; might be attributed to the Honda was being given more throttle.

Will be easy to fix with a larger piece of hose but......... don't recall anyone having this problem. The hose only extends 8" above the cabin floor now.

Also noting cracking in the rudder for the first time. Was it concluded that both the later wb & wk rudders are having this problem?

Edited by - on

Oscar
Master Marine Consultant

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2030 Posts

Response Posted - 05/05/2004 : 07:47:33

Interesting on the splashing hose, was the board up or down? Do you trailer sail? Have you had a chance to get under there and peek? How about down the hose....is there a large gap somewhere? Finally, do you have a lot of people in the back of the boat when you go out?

I have not heard about this yet.......I'd check it out and if nothing is seriously wrong I'd stick a rag in there, or you can get creative and fabricate some kind of splash cap.....

I also have not heard about the longer rudder cracking.

Oscar
250WB#618 Lady Kay in Venice Inlet, Florida USA.

Edited by - on

Arlyn Stewart
Master Marine Consultant

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2980 Posts

Response Posted - 05/05/2004 : 09:01:28

I've had this happen several times. It also happened on the C25 and on it was attributed to happen while backing up at greater speeds.

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dubedoo
1st Mate

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Response Posted - 05/05/2004 : 13:41:02

Thank you Oscar & Arlyn! Oscar, the board was down. Yes, we are trailer sailing

(beginners). Yes, I looked the bronze turning ball set up over top to bottom. The ball is properly seated but, understandably, does not seal this thru hull opening. Otherwise no large gaps. Weight in the back of the boat was a contributing factor - but when water was coming in I had people move around and found it not to be the only factor. I'm still thinking that a longer hose should take care of it but I was also curious how far above the cabin floor the hose extends on other boats since I did not remember others mentioning this problem. Looked at a Catalina diagram and it shows the hose extending well above the WB valve box. On our boat the hose does not extend beyond the top of the box (8" off the floor). Since water coming in through the hose is not an "all the time phenomenon" and since the hose opening is shielded by the vinyl cover, I also thought this info might help others if they find water in this area.

Oscar, by the longer rudder were you referring to the wk rudder? Thought that I had seen where later boats,, both wb with 3rd gen. rudder and wk had experienced rudder cracks? I have the 3rd gen. that came with the boat. Since my 1 yr. warranty is up next month I'm going to be watching the rudder closely.

Steve

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Oscar
Master Marine Consultant

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Response Posted - 05/05/2004 : 15:02:55

OK, I'll go out there......my hose sticks out 5-6" above the top of the box ......guess the Catalina Manufacturing Specialist assigned to your boat thought that yours would be just right , which came in handy because that was the longest piece he had lying around.......(Call Kent Nelson and tell him about it!)

You need to extend that a little....You can either have your dealer do it (with the hassle that goes along with that), or you can buy a new piece of hose and do it yourself, or you can see if there's a 6 or so inch piece of pvc at Home Depot that will fit in there.....

I have heard that re. the rudder Catalina will honor a warrantee claim past the one year cutoff...(I think I heard someone with two)
as well they should....

Oscar
250WB#618 Lady Kay in Venice Inlet, Florida USA.

Edited by - Oscar on 05/05/2004 15:07:22

Keith D.
Navigator

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233 Posts

Response Posted - 05/06/2004 : 00:20:53

Steve the previous owner if my boat must have had the same problem. The black hose goes up about 5-6” above the box but there is a piece of PVC pipe which fit the inside of the hose which brought it up another 5” at the top of the PVC pipe there is a cap which was drilled so the cable would just come through. The hole is oblong so the fitting at the end would pass through and it was filled in with some RTV so there is only enough room for the steel cable to come through. With this setup you won’t get any water splashing up through the hose. If you want a picture of the setup I could email it to you or post it. Keith

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dubedoo
1st Mate

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68 Posts

Response Posted - 05/06/2004 : 09:39:31

Thanks Keith. Don't necessarily need a photo; your explanation was clear......except that I'm a little slow this a.m. and haven't figured out the RTV yet.

Steve

Edited by - on

Keith D.
Navigator

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233 Posts

Response Posted - 05/06/2004 : 11:42:37

I have pondered on this for a while and I think I have figured out what you are seeing.

THIS SHOULD HAPPEN TO ALL TRAILER SAILORS.

When you launch your boat there is air trapped in the center board trunk. At first it will just vent out the 2” pipe until water covers the bottom of the pipe. At this time it will try to bring the water up with it. When the water isn’t very deep in the pipe the air bubble will just go around the water but as it gets deeper in the pipe it will bring the water up with the air bubble. This is the first phase. The second phase is when you leave the dock (start motoring) because these boats tend to set a little low in the back there is air caught in the front of the center board trunk. As the boat starts to rock or as people start to move around in the boat the air goes to the rear of the trunk and forces more water up the pipe. On each rocking of the boat you will see water gushing up the pipe. Actually the proper term would be percolating. The old coffee pot effect. There will be one more phase to this problem. It is when you lower the centerboard. The head of the centerboard will go up in the trunk displacing any air, which is up there. This is out of the highest part of the center board trunk. This air will now be under some pressure and looking for a way out. As you have now guessed it the only way out is through the 2” pipe and we get more coffee pot effect. After all of the air is purged and you start sailing you will no longer see this problem. The check digit would be to watch it when you are motoring in at the end of the day. A longer pipe will probably not help because the air will got to the top one way or another. The best solution would be to have baffles in the pipe, which would cause pressure differences in the pipe, which would force the air bubble to go around the water.
It would seem this would happen to all trailer sailors but they may not have been so watchful as you were. I know I always end up with some water in the bilge and haven’t figured out where it came from. You might have found my answer.

Keith

P.S. RTV is just another term for silicone caulking.

Edited by - on

Oscar
Master Marine Consultant

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2030 Posts

Response Posted - 05/06/2004 : 12:11:36

Lady Kay is dry, wet burps as you describe would end up on my pillow.......

In answer to your theory, I agree with the bubbles coming up through the pipe, however, the gap around the ball is such that the bubbles would be small, and I doubt they would regroup enough on the other side to force water up the pipe, but more come up in a little stream......bubbles. tiny bubbles........but I guess you could stick a burp rag in the pipe if you have trouble with it.....

Oscar
250WB#618 Lady Kay in Venice Inlet, Florida USA.

Edited by - Oscar on 05/06/2004 12:15:16

Arlyn Stewart
Master Marine Consultant

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2980 Posts

Response Posted - 05/06/2004 : 13:15:48

There may be one other issue bearing upon the influx of water to the aft berth cushions on the w/b boat which I've obverved.

The c/b retract line exits the bridgdeck thru a chase which is relatively horizontal. This chase connects the cockpit and the inner liner. I think that this chase can collect x amount of water which may slosh into the berth.

This may occur within days of a rain storm which might have seen water osmosised into the chase via the c/b line.

Edited by - on

Keith D.
Navigator

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233 Posts

Response Posted - 05/06/2004 : 15:53:37

On my boat the chase will drain down the liner on both sides. I just ran a network cable for the gauges through this chase. It was a favorite place for wasp nest. I think I cleaned eight or nine of them out of there. It also seemed to be an entrance for mud wasp into the boat. How do they find these little holes?
My thought in the air getting past the turning ball is if there is enough room between the top of the ball and the top of the water in the pipe the air will come back together. The air will compress as it goes past the ball and decompress after it gets past it. This is the only way I could account for the gushing of water out of the tube. For water to come out as described there must be a good size gap between the ball and the tube. Air could get past it fast but water wouldn't, it can't compress like air. This is the only explanation I could come up with as to it stopping after he started sailing.
Has anyone figured out how to get the turning ball out of the tube? I don’t think mine is turning very well if at all. There must be some way to service it.

Keith

Edited by - Keith D. on 05/06/2004 16:08:36

sailorman
1st Mate

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69 Posts

Response Posted - 05/20/2004 : 00:33:22

I finally splashed my boat "On Eagle's Wing" this last Monday. After a short sail in gusty winds we discovered water leaking thru the centerboard hose as earlier discussed here. It appears the centerboard hose was pushed down and not extended above the floor enough to prevent water from shooting up the hose. Now this was done while sailing. Rather poor for a large company to permit this kind of work. This is a really good boat. It could be a really great boat with a little attention to detail and quality control. As it is, I have fashioned a pvc pipe that I have stuck in the hose to add 12 more inches to the length. I have sealed it with silicone and although not tested yet, I feel it will work fine.

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