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Author Topic: Bilge Leak - crack in bilge mast step  (Read 428 times)

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Sdsailor

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Bilge Leak - crack in bilge mast step
« on: January 20, 2019, 07:41:16 PM »

Hello C34 owners. I found a bilge leak. Itís seeping in from a crack on the mast step. Iíve seen the other posts of this crack but without leak. Has anyone else dealt with this?  I have not had any groundings whatsoever, no impact of any kind. Iím planning to haul out to inspect the bottom and see where the leak is coming in and why itís cracking the bilge. Iíd like to know whatís the best plan of attack and the best/worst case scenario?

Thank You,
Dan
Dukes On Sunday
1987 MK1 Hull 503
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Jon W

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Re: Bilge Leak - crack in bilge mast step
« Reply #1 on: January 20, 2019, 09:18:44 PM »

It's a little difficult to tell what I'm looking at.

Regarding the small leak; if you have a keel stepped mast, when it rains some water enters the holes in the mast and runs down the mast into the bilge. Not a lot, but enough that I make a point to dry it out after a heavy rain. Are you in fresh or salt water? If salt water, a taste test will tell you if it's a salt water leak.

Regarding the crack, it looks like a coating of something was troweled on top of the fiberglass in the bilge and that is what is cracked. Not the actual bilge. I attached a photo of the walls in my bilge to show the difference.
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Jon W.
s/v Della Jean
Hull #493, 1987 MK 1, M25XP, Manson Supreme 35
San Diego, Ca

DaveBMusik

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Re: Bilge Leak - crack in bilge mast step
« Reply #2 on: January 20, 2019, 09:55:04 PM »

Here is some fun reading... You may or may not have a similar issue. good Luck!

http://c34.org/bbs/index.php/topic,9208.msg67466.html#msg67466
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Dave Burgess
Water Music
1986 C34 Hull #206, Fin Keel
Yanmar 3YM30
Noank, CT

Sdsailor

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Re: Bilge Leak - crack in bilge mast step
« Reply #3 on: January 21, 2019, 12:46:26 AM »

Thanks guys.  The picture is not good but the video is not allowed.
The water is definitely seeping in from the crack. Which is located on the mast step fwd side.  I don't believe itís  rain water as it's been a week. And after vacuum and dry,  next day was 1/2 water. The crack runs from top of step to bottom corner.   I also looked at the link. Thank you. That is interesting to see whatís inside the step. At this point, I worried my keel boltsay be to blame.
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DaveBMusik

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Re: Bilge Leak - crack in bilge mast step
« Reply #4 on: January 21, 2019, 05:15:57 AM »

I had a small crack at the hull to keel seam with sea water leaking up through a keel bolt.
The early 34's were constructed with plywood between the hull and the bilge floor and there was a channel/void where the water was traveling.
After trying some exterior fixes and worrying about the keel bolts, I ended up ripping out the old plywood and replacing with fiberglass according to Catalina's instructions.
I also dropped the keel to inspect the bolts. The good news was that the bolts were in excellent condition. We cleaned out the seam, bedded with 5200 and glassed the outside. It's not going anywhere and no leaks.
The Catalina documents are located somewhere on the site.
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Dave Burgess
Water Music
1986 C34 Hull #206, Fin Keel
Yanmar 3YM30
Noank, CT

Dave Spencer

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Re: Bilge Leak - crack in bilge mast step
« Reply #5 on: January 21, 2019, 10:29:07 AM »

I think this is the document Dave is referring to.  It's located in the Tech Wiki under "Hull".

http://c34.org/wiki/images/6/62/CTY_Pre-1988_model_Keel_Stub_Repair_-_Feb_1996.pdf

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Dave Spencer
C34 #1279  "Good Idea"
Mk 1.5, Std Rig, Wing Keel, M35A Engine
Boat - Lion's Head, Ontario
People - London, Ontario

Sdsailor

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Re: Bilge Leak - crack in bilge mast step
« Reply #6 on: January 21, 2019, 11:52:03 AM »

Thanks again guys. I called the insurance company to set up a claim.  After thinking about it more. I suppose the crack in the mast step coupd continue leaking out residual rain water if it were filled, now that I know itís hollow inside. The crack doesnít go to any bolt but Iím hoping for the best is all. Iíll update when I have more info.
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Noah

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Re: Bilge Leak - crack in bilge mast step
« Reply #7 on: January 21, 2019, 01:02:31 PM »

Can you taste the water to see if it is seawater or rain water, or are you berthed in freshwater?  Also, I wish you the best with an insurance claim but I fear they will call it ďwear and tearĒ or a ďmaintenance issueĒ. Keep us posted. Meanwhile, as Jon said, the heavy coating that is cracked in the bilge doesnít look stock and perhaps it was a POís attempt to solve some problem there?
« Last Edit: January 21, 2019, 01:17:56 PM by Noah »
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1990 hull #1014, San Diego, CA,  Fin Keel,
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Sdsailor

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Re: Bilge Leak - crack in bilge mast step
« Reply #8 on: January 22, 2019, 11:29:36 AM »

Thanks. I have a surveyor coming out tomorrow. I did taste it but and it wasnít all salty. At the very least I have to insteps the mast. Iíll post update tomorrow.
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Jon W

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Re: Bilge Leak - crack in bilge mast step
« Reply #9 on: January 22, 2019, 11:40:03 AM »

If it wasn't salty, and you're in salt water, then don't think it's a below the waterline leak. I'm still suspicious of what thick goop troweled in there is covering.
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Jon W.
s/v Della Jean
Hull #493, 1987 MK 1, M25XP, Manson Supreme 35
San Diego, Ca

kh3412

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Re: Bilge Leak - crack in bilge mast step
« Reply #10 on: January 22, 2019, 02:35:27 PM »

Your picture looks like my mast step before the repair. Water comes down the mast and is supposed to drain through the step. Found mine full of lint from the lines running in the mast and whatnot. Think the water pools under the mast and runs down the lag bolts holding the step. The white stuff that was cracked was gelcoat on mine they just spread it around for the finish. How ever you decide to go would consider using a lag/stud so you can set the lag and seal it but still be able to remove the nuts on the mast step for removal.
Attached the instructions from Catalina.
This is for the step not the bilge which is another story :?

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1988 mk1 a work in progress #618

kh3412

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Re: Bilge Leak - crack in bilge mast step
« Reply #11 on: January 22, 2019, 02:44:37 PM »

Here is a picture of the mast step after repair with the studs sealed in the top ready for step to be bolted.
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1988 mk1 a work in progress #618

Sdsailor

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Re: Bilge Leak - crack in bilge mast step
« Reply #12 on: January 23, 2019, 10:20:55 PM »

Thank You God of the Sea!  i feel so much better today. After reading about the rain water draining into the step from KH3412, This is most likely my issue. Although, I do not know why the step is all over bonded?

I found no water in the bilge today (4 days after vacuuming out). The Surveyor also thinks It's just a mast step issue but wants to inspect the bottom for safety, as do I.

I then spoke with the boatyard, to have them come out and give their assessment of the necessary labor involved.

Im seriously very thankful for everyone's  speedy responses and wisdom. 
Since I'm limited to photos here, and for anyone interested in more detail of ongoing projects,  i've posted video and pics on instagram "sailingdukesonsunday".

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Sdsailor

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Re: Bilge Leak - crack in bilge mast step
« Reply #13 on: January 23, 2019, 10:30:48 PM »

It's a little difficult to tell what I'm looking at.

Regarding the small leak; if you have a keel stepped mast, when it rains some water enters the holes in the mast and runs down the mast into the bilge. Not a lot, but enough that I make a point to dry it out after a heavy rain. Are you in fresh or salt water? If salt water, a taste test will tell you if it's a salt water leak.

Regarding the crack, it looks like a coating of something was troweled on top of the fiberglass in the bilge and that is what is cracked. Not the actual bilge. I attached a photo of the walls in my bilge to show the difference.

Jon, thanks for the great picture for me to compare to.  i plan to have it rebuilt. someone mentioned there was a catalina directive to do this. i'll have to locate it.
question:  what are the little shelves you have in the bilges for, high water bilge pump?  thanks,  Dan
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Jon W

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Re: Bilge Leak - crack in bilge mast step
« Reply #14 on: January 23, 2019, 10:56:40 PM »

I think the attached PDF is the Catalina drawing for keel stub wood removal folks are referring to. I believe a copy is also in the Tech WIKI for downloading.

The shelves are for a second electric bilge pump with it's own float switch that I added a while back. The second pump is a Rule 3400. I've attached a photo with the new pump installed. The top of the pump is just below the removable floorboard. There's a write-up with photo's  in the Tech WIKI if interested. Easiest to look under Projects By Boat/Author, then Della Jean / Jon Windt.
« Last Edit: January 23, 2019, 11:00:10 PM by Jon W »
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Jon W.
s/v Della Jean
Hull #493, 1987 MK 1, M25XP, Manson Supreme 35
San Diego, Ca
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