50/52 Sedan water accumulating in floor compartment

Gary B

Active Member
May 20, 2015
317
Long Island
Boat Info
2007 52 Sedan Bridge
Engines
Cummins QSM 11
Has anyone with a 50/52 Sedan had an issue with water accumulating in the small under floor compartment between the guest stateroom & guest head? Impossible to get your in head but can stretch your arm into it.
Boat was not wrapped over the winter & compartment stayed bone dry. Compartment was dry for first three weeks with boat in the water this spring. Today I removed about 3 gallons of water after having the AC dehumidifiers on all week and after taking the boat for a short ride. Not sure if the water was there before the ride. Anyone else have a similar issue? Already eliminated the port hole in the head. Definitely not the port hole.
 
Funny you brought this up because my wife actually found that compartment FULL when we opened the boat, it was full of "pink"
all we could do was shop vac it out and has been dry since. We cannot get our heads in there to get a good look either
I went searching for a broken line but found none. If there's pink in there then something has a small leak and the only lines I see are the 2 cold and 1 hot that supply the guest head. I have a mirror on board that I never thought of using. And since your in the same environment I wonder if something split over the winter?
 
The only other hose that runs through that compartment is the toilet sanitary drain hose but I'm sure that's not your issue as you would know if that was a problem. Did you check to see if it's fresh or salt water?. Is your water system holding pressure or is the pump kicking on periodically? I'm thinking maybe the water accumulated under the guest head and breached over the bulkhead wall (during your cruise) that is located under the guest stateroom/head partition. I would run each of the bathroom fixtures one at a time and check the compartment and specifically look through the opening in the bulkhead.
 
We had the issue last year which was our first year with the boat. I dried it out and sprayed mildew block at the end of the season. It was bone dry all winter. We did not have any non tox in the compartment after winterizing which adds to the mystery. I think it's fresh water but not 100% certain. I really don't feel like tasting it. Maybe it's a fresh water drain leak from in the head or maybe the AC since the pressure water pump doesn't cycle on/off but still at a loss. Any insight into this mystery would be awesome
 
When I commissioned the fresh water system I check the the compartment and it was dry. Maybe you are right that a drain hose is leaking into the compartment below the head and when we drive the boat it finds its way back to the smaller compartment between the head and second stateroom?
definitely not waste hose from head leaking.
 
How about the A/C drain? That will give a lot of water if it is humid out. Maybe clogged at the pan? This happened to me once.
 
I can tell you that when I had my 2005 500DB, I had that problem. In my case it was the thread on hose fittings for the freshwater distribution hoses. Most were leaking. I also had my yard install inspection plates in the false floor below the centerline compartment, as well as the compartment below the washer/dryer. Both were full of water. You may want to drill a 1/4" hole through both floors and insert a long cotton swab to see if it comes out wet. My yard contacted the manufacturer of the blue and red distribution hoses and got all new clamp-on threaded ends with a design update.
 
Well, mine was def winterizing antifreeze for sure... Now I'm having problems with the SeaTech plastic manifold in the bilge where the washer dryer is. ( not related) these fittings and Company are a PITA to deal with so far. What did the sea tech fitting supply that was leaking? Tc410?
 
Jeff, did you have a bad fresh water hose or hose connection in guest head that led to water in the small floor compartment between the guest head & guest stateroom?

So so if I understand you, the floor that the sump pump basin is attached to under the hallway is a "false floor" and there could be more water in there? Is that connected to the compartment that is filling up between head & guest stateroom? There is a small bilge w/a pump next to washer. Did you put the second inspection plate on the other side near the pressure water pump & central vac unit?
 
I have an 2006 52 Sedan and had water in same compartment. New boat to me in June 2015. Recently, found a small leak that look like coming from stringer in same compartment area. Drilled holes in stringer but they were dry. Still trying to track down.
Also, had problem with water in washing machine area. Nearly all the hoses were leaking at connection to manifold. Contacted Sea Ray and SeaTech hoses. The fix was to buy new 12" hoses, cut in half, cut old fitting off and use a barb to connect hose to manifold. Once complete no more leaks. I also had to replace several in the engine room compartment manifold as well. My concern now is if they are leaking at manifold there is a good chance will be leaking soon at the other end as well. Will deal with that when that time comes.
 
Last edited:
....Contacted Sea Ray and SeaTech hoses. The fix was to buy new 12" hoses, cut in half, cut old fitting off and use a barb to connect hose to manifold. Once complete no more leaks. I also had to replace several in the engine room compartment manifold as well. My concern now is if they are leaking at manifold there is a good chance will be leaking soon at the other end as well. Will deal with that when that time comes.

I'll answer the questions above by stating that the fix quoted here is what was done to my 500. Per my yard, SeaTech is well aware of this generation of faulty connectors. Cut 12" in half and you get two 6" both with a threaded fitting. Cut the threaded fitting off the leaking hose, and join the new 6" with brass barb fitting and hose clamps. YES.... they WILL leak at the fixture ends as well as the manifold ends. My yard replaced nearly all of them proactively. The galley icemaker was leaking, the cockpit icemaker was leaking, back of washing machine leaking. As well as several connections at both manifolds and a few faucets. I am thinking the compartment you mention is on the outside of the stringer under the guest head. I would suggest seeing if the guest head faucet or shower fitting is leaking. If you find any connections that aren't leaking - DO NOT touch them. DO NOT look at them - they will start to leak!! And yes, the flat section at the bottom of the V (under the sump box) is a false floor. There is a void under it down to the V of the hull. Mine had water in it. Not hurting anything (unless you store outside in freezing climes), but doesn't belong there either. If you decide to drill a 1/4" test hole, do not drill it on the centerline - drill and inch on either side of center. There is a 1/2" plywood vertical support under that false floors that runs fore-aft along the center - you want to go one side or the other of that. Stick a q-tip down it and see if the cotton comes up wet. Good luck and anyone please feel free to PM me for my cell to discuss if you wish. And by the way, the stringers will not get wet or rot in these boats. They are hollow and made up of very thick solid fiberglass walls and top. There is no wood in them at all to my knowledge.
 
Last edited:
I looked today at the compartments and again some water in the small one. So i pulled the hatch in the guest stateroom and found about 4"-5" in there also.
These 2 compartments are isolated with no weep holes im starting to wonder about a fresh water supply hose now.
My manifold is crap and i replaced it today with a manabloc brand but had to make new connections to make it work. I may still have to cut some off and go straight to the barb idea. Again what terrible connectors from Seatech!
Heres a few shots
288dcf485f5467abc8f5bc2f9f973988.jpg
c89887e49a28345e853e2bd37e1a40d5.jpg
2f04db27d8f656f6ae04d9ddf89927b4.jpg



Sent from my iPhone using Tapatalk
 
Shamrock - I think you'll find that the problem doesn't lie with the male threads on the manifold but the female threads in the hoses. From what I see in your pictures those female threads are the factory setup. I believe they will leak again at some point.
 
Jeff my old manifold has a crack in in so I needed to replace it and now I think I'm going to do as you said cut the ends off once and for all!!! And go barb to barb with a pex crimp to the new manifold. I may also do the engine room connectors as they all drip here and there.
 
Ahhh now that's a different story! Yes you definitely needed the new manifold. I don't think you'll regret eliminating those faulty thread connections on your current lines. I really miss those Whale 15mm push in connectors off my old 410da. Those were rock solid and never leaked even after taking them apart multiple times!
 
Joe

Take a look at Vinny's boat and you'll see what I did with leaking connectors. I had to replace one on the MSR head and one at the manifold for the Washer. I just cut the ends off and used a barbed brass female fitting and hose clamp. That arrangement should never leak. As Jeff said, the issue is with the female fitting not the male threads, though I think the fault lies with the conical washer that provides very limited sealing surface area.
 
Brian as I stated I replaced the manifold due to a crack and the threads on the new one are proprietary so I had to make the connectors to Matt up to the threads.. I know about the female ends its not so much the cone seal inside them it's the fitting itself they leak between the swivel before the plastic nut. So far only 2 are dripping but I may just do them all. I'm worried more about the water in the compartments as the OP asked about . If we all have the same issue its obvious it's a quality issue
 
I have found that after a few seasons of winter to summer, on both Sea Rays (480 DA, 47 DB) we have owned these fitting all leaked. It may be the shrinkage due to tempature variations but after several discussions with Sea Ray CSR led me to replace every end connector with standard PVC piece and two hose clamps on each. Never leaked again.
 
Problem is the ones you can't get to on our boats like the shower valve supply you can remove the mixing valve but the hoses stay behind the wall it's impossible to replace those connections and I'm wondering if the guest head shower is le leaking into the small compartment???
although, I wonder if I disconnect the hoses top and bottom if I could pull them up enough to cut the ends off??? Hmmmm. Another project and more gashes on my hands!!
 
Last edited:
I seem to recall an access panel in the port side master state room closet? I believe this would give you access to the back side of the shower. Only working from memory here.
 

Forum statistics

Threads
113,117
Messages
1,426,435
Members
61,030
Latest member
AbagailPugh
Back
Top