Help with a 336

Charlie13958 · Aug 29, 2011

When I had my 1995 336, I had the sea hood off a couple of times. As you say, just the screws and cut the sealant. It is heavy, and should have two to move it.

robertsapp · Aug 29, 2011

neilmcc said:
I have become the owner of a 1997 336 which has been out of the water for some time. There is a large GRP cover which runs from the companionway top to just short of the mast under which run the halyards and control lines and which has two dorad vents. This cover appears to be screwed down with stainless self-tappers and sealed round the edges.
Does anyone know if this is easy to remove (and Re-fit) as there is a few years of dirt under it and I want to replace the vents etc.

All the best,

No need to remove it just to replace the cowls for the vents. They just snap in.

robertsapp · Aug 29, 2011

neilmcc said:
There seems to be all sorts of rubbish which has gathered underneath it and I thought the only way to clean it properly would be to take it off.
What else is under there other than the vent inlets?

The lines and organizers, and a small standpipe in the aft starboard corner to run wires through the deck to the instruments. That's all I know. The dorade box is a molded fiberglass unit, the top of which sits flush with the sea hood. Nothing to service or clean, and the cowl vents snap in place. If it were me, I'd just slide a soapy mop under there a few times and then flush it with a hose. About the only good reason I can think of to take the sea hood off is if you need to replace one of the line organizers or want to remove the companionway slider.

robertsapp · Aug 30, 2011

No worries. There are a few of us on here that know that particular boat pretty well. Ask any questions you may have. Personally, I'd love to know how your boat got to Scotland. It would be nice to know it could have sailed there.

robertsapp · Aug 31, 2011

Well post some pictures sometime when you get a chance. It's always nice to see someone else's boat.

Tribu336 · Aug 31, 2011

We also own a 1995 336 and every time we have a heavy rain fall, water seeps in and forms a small pool on the bottom of the fixed port (the one on the starboard side, below the rubrail). I have been trying to figure out where that water is coming from but with no success so far. At first, I thought it was thru one of the seahood screws but it is not.
Has anyone experienced this and found the infiltration point?

robertsapp · Sep 1, 2011

Tribu336 said:
We also own a 1995 336 and every time we have a heavy rain fall, water seeps in and forms a small pool on the bottom of the fixed port (the one on the starboard side, below the rubrail). I have been trying to figure out where that water is coming from but with no success so far. At first, I thought it was thru one of the seahood screws but it is not.
Has anyone experienced this and found the infiltration point?

Which one has the water? The one in the salon or in the aft cabin? The fixed ports are bedded in a pretty thick bead of Dow 795, so I don't think they leak that often. Personally I've always suspected the hull to deck joint. A good way to check might be to pour some water over the rubrail with a hose in the general area of the port and see if the water appears - if it does, then put a bead of caulk along the top of the rubrail and see if it stops. Not a permanent fix, more a temporary patch. Also, we got water at the starboard salon port light once when I didn't route the mast wires properly (forgot the drip loop inside the compression post). When it rained, water was coming down the mast wiring, through the cabin top, and then running along the top of the overhead liner and behind the starboard salon paneling, appearing at the port light area. We always got it on the starboard side because our 336 has always had a slight starboard list. Putting the proper drip loop back in the mast wiring solved the problem. Just a thought.

Tribu336 · Sep 1, 2011

robertsapp said:
Which one has the water? The one in the salon or in the aft cabin? The fixed ports are bedded in a pretty thick bead of Dow 795, so I don't think they leak that often. Personally I've always suspected the hull to deck joint. A good way to check might be to pour some water over the rubrail with a hose in the general area of the port and see if the water appears - if it does, then put a bead of caulk along the top of the rubrail and see if it stops. Not a permanent fix, more a temporary patch. Also, we got water at the starboard salon port light once when I didn't route the mast wires properly (forgot the drip loop inside the compression post). When it rained, water was coming down the mast wiring, through the cabin top, and then running along the top of the overhead liner and behind the starboard salon paneling, appearing at the port light area. We always got it on the starboard side because our 336 has always had a slight starboard list. Putting the proper drip loop back in the mast wiring solved the problem. Just a thought.

It's the one in the salon. When we bought the boat, I sealed the entire upper side of the rubrail with silicone so I don't think water comes from there. I did it more for appearance reasons. I also have the required drip loop inside the mast.

I will keep searching. Thanks! Anybody else has a suggestion?

robertsapp · Sep 2, 2011

Well, there's always the soap bubble test. Make a temporary drop board for the companionway with a hole that you can insert a leaf blower or shop vac exhaust through, blow air into the boat to pressurize it slightly, and then mop the decks with a bucket of soapy water, then stand back and wait for bubbles to appear.

Tribu336 · Sep 2, 2011

Thanks! I have read about this before but never tried it. Will give it a try at haul-out.