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 Hatch Installation		  New Topic  Topic Locked
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Daren
1st Mate

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USA
81 Posts
Initially Posted - 06/20/2007 :  14:29:59  Show Profile  Visit Daren's Homepage
I am contemplating installing one or maybe two hatches along the coaming of the cockpit to allow more light in the aft quarter berth. Has anyone attempted anything like this? Any suggestions? Any recommendations? Any warnings?
S/V Prima Donna
1986, 15 HP Universal Inboard Diesel, Fixed keel, Hull # 5362
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 06/20/2007 :  14:39:39  Show Profile
A number of people have installed an opening port in the side of the starboard cockpit seat, which should provide more light and better ventillation than would one up in the coaming. It was on my "nice-to-have" list, but I never got down to it.

Here's a similar installation on a C-250, which has the athwartship aft-berth, and thus ports on both sides of the cockpit...
http://www.catalina-capri-25s.org/tech/tech250/cyana2.asp
Edited by - Dave Bristle on 06/20/2007 15:07:02
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Daren
1st Mate

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USA
81 Posts
Response Posted - 06/20/2007 :  15:39:37  Show Profile  Visit Daren's Homepage
Starboard cockpit seat is what I meant. Thanks for clarifying.
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 06/20/2007 :  16:30:57  Show Profile  Visit Frank Hopper's Homepage
They came stock on the '89.
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Dave Otey
Navigator

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USA
112 Posts
Response Posted - 06/20/2007 :  19:49:56  Show Profile  Visit Dave Otey's Homepage
I just replaced my original Beckson quarterberth hatch with another Beckson. On my 25 (hull 6029, 1991) the size is a 5x12. Beckson has a complete installation guide for both replacement and new installs. The Beckson hatches are plastic and Beckson recommends good grade Silicone II found at your local Home Depot. Go with the barrel screw arrangement as the gap between the outer and inner walls will not support the stock screws unless you fill all gaps between the two walls with epoxy. Beckson recommends filling the walls with closed cell expanding foam. I think this is ok if you have a small space to fill for additional compression support. I found out the hard way, the original screws attached to the inner wall liner is not enough support for compressing the hatch frame.Be sure to clear the site from all residual silicone from the original install.Beckson recommends sanding with 220 grit paper before attaching the outer / cockpit trim. Use ample caulk.
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DaveR
Master Marine Consultant

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USA
2015 Posts
Response Posted - 06/21/2007 :  08:00:42  Show Profile  Visit DaveR's Homepage
Yep, I've got one on my 89 too. Can be pretty rough on the ankles though, I'd love to replace mine with a flush hatch.
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 06/21/2007 :  08:44:10  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by DaveR</i>
<br />Yep, I've got one on my 89 too. Can be pretty rough on the ankles though, I'd love to replace mine with a flush hatch.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
Ya, that one pictured in the link above looks better. The wall is vertical, so there should be no need for the "self draining" type with the raised rims.
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mhartong
Navigator

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USA
152 Posts
Response Posted - 06/21/2007 :  09:40:00  Show Profile  Visit mhartong's Homepage
It really is a good mod. I used Lewmar Model 0 (6 15/16 x 1211/16 x 5/32 ). They flush mount. It adds much needed light, and air, to the aft berth.

Lewmar has a really nice of instructions at http://en.lewmar.com/support/PDF/HP_Fit_Eng.pdf
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glivs
Admiral

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USA
836 Posts
Response Posted - 06/21/2007 :  20:29:31  Show Profile
I started out this spring to replace the rubber gasket on the Beckson port over the quarterberth on my '89 to stop a leak, but ended up removing and rebedding the port as well. I was really surprised at how poorly the original installation had been (compared to the specs recommended on Beckson's web site). The port is a great feature but if you take on this project follow the manufacturer's instructions closely. Most importantly if you go with Beckson (1) shape the rough opening to ensure at least 1/8" sealant around the port to allow for thermal expansion/contraction, (2) fill the gap between the cockpit and inner liner with epoxy to prevent/limit any differential movement, and (3) use flush mount barrel nuts with 10/24 machine screws instead of the coarse thread pan-head screws Catalina used. (You will likely have to cut a few screws to length because of the variable wall thickness.) Also, as originally installed on my boat, the port projected into the cockpit at least 1 1/8" and was a real anckle buster (unlike in Frank's photo above). As Beckson recommends (and I called to verify), it is relatively easy to saw off the excess and round over the edges for a near flush mount (I left about 1/4 to 3/8" projection outside the trim ring (top vs. bottom)). The final installation looks and works great and in hindsight, was not that difficult. Getting the old silicone off was probably the most painful task. Again...the Q'berth port is a great feature.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.