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Companionway hatch leaks

S2 9.1 Class Bulletin Board » Technical Assistance, Fixes & Advice » Companionway hatch leaks « Previous Next »

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Mike Bergmann
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Posted on Saturday, June 14, 2003 - 04:46 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

I have the same setup with a home-built instrument seahood fastened to the original factory hatch cover. I keep the boat on a mooring, and trim is bow down when the boat is empty. I have not yet had the problem with leakage in this area.

One suggestion: there could be a crack in the bloack plastic track for the sliding hatch. On my boat, the hatch cover is screwed through the track material into the cabin top. A crack in the track material could leak into the boat.
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Deborah Davenport
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Post Number: 18
Registered: 04-2001

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Posted on Friday, June 13, 2003 - 01:49 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Thanks to Chris and Jeff for the quick responses: We know for sure that neither the mounting screws nor the wires are not the problem. We can see where the water comes in -- it's exactly at the forward port side corner of the companionway opening. We're going to try a setting a level on the hatch, and then stepping back into the launch so that our weight doesn't affect trim. Seems like that will be the only way to test the mooring hypothesis.
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Jeff Roy
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Username: Jeffr

Post Number: 75
Registered: 03-2001

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Posted on Friday, June 13, 2003 - 11:38 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Interesting.

I think your theory is definitely plausable. I keep my boat on a mooring and it definitely does lie slightly bow down relative to the water line. It bothered me at first until I checked how it floated off the mooring and it was very close to level.

However I do not get any water from that. If you have a short mooring penant your boat may float more bow down than mine. Same could be true if you store a lot in the V-berth.
Also, I seem to remember a discussion that said G&S designed the water lines to match how the boats would float when fully crewed, i.e. more weight aft.

The seahood and rails on my boat were just screwed down, not through bolted. If that is how yours is then water is not getting in through a poorly bedded seahood. However, if they do leak water will get into the deck.

That was one of the larges sources of deck rot on my boat.

Since we have been getting so much rain lately, why not just go sit in the boat on the mooring any wet saturday and see if you can find out the real answer :-)
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Chris Graber
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Username: Cgraber

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Registered: 02-2002

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Posted on Friday, June 13, 2003 - 11:37 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Deborah:

I have this problem from time to time. We have a seahood as well. The instrument wires enter the interior of the boat on the port forward side, and require periodic caulking. Depending upon the trim of your boat and the effectiveness of the caulk, you could have a leak. The mooring might be part of the problem. You might investigate this on your boat.

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Deborah Davenport
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Username: Ddavenport

Post Number: 17
Registered: 04-2001

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Posted on Friday, June 13, 2003 - 11:16 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

For the past several years, we've been getting water in through the port side forward corner under the companionway hatch. This boat has a seahood, so we removed and thoroughly re-bedded that -- no improvement. This happens only during heavy rains (lots of that this spring/summer on the east coast). We are beginning to suspect that the problem may relate to being on a mooring -- we never had this problem when we were on a dock. We think possibly the pull of the mooring is causing bow down trim -- so the water effectively piles up and overflows the drainage wells that are molded into the sides of the companionway opening (between the track and the opening).

Any thoughts, anyone? Thanks!

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