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 Catalina/Capri 25/250 Sailor's Forums
 Catalina 25 Specific Forum
 front hatch thickness		  New Topic  Topic Locked
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jonfew346
1st Mate

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USA
33 Posts
Initially Posted - 11/18/2011 :  12:28:57  Show Profile
Does anyone know the typical thickness of a solid front hatch? I was considering recessing a piece of 3/16" acrylic as a skylight. I am going to make some windows next month and should have enough left over acrylic.
Jonathan Chattanooga,TN 1978 C25 SK/SR/Dinette
MC Scow 1341
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islander
Master Marine Consultant

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USA
4018 Posts
Response Posted - 11/18/2011 :  15:30:01  Show Profile
Well I guess you could remove some of the screws for the hinges and measure the depth and hope the hatch is the same thickness throughout. Are you going to replace the whole hatch or just put a lite somewhere in the middle?
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delliottg
Former Mainsheet C250 Tech Editor

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USA
4479 Posts
Response Posted - 11/18/2011 :  16:12:32  Show Profile  Visit delliottg's Homepage
If you're handy with a jig or band saw, or even a scroll saw, you could make yourself a pair of large outside calipers from 1/4" plywood or something along those lines, and measure the depth pretty easily. Something like [url="http://www.shopping.com/Brown-Sharpe-Brown-sharpe-precision-Outside-Flat-Leg-Calipers-599-821-12/info"]this[/url].

I found some similar to the link above for about $10 if I remember correctly (but don't remember where). They're not as nice as those, but they do what I need when I'm working on my lathe.
Edited by - delliottg on 11/18/2011 17:15:56
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 11/18/2011 :  16:44:22  Show Profile
Does your boat not have the skylight in front of the forward hatch? mine provides a lot of light to the V-berth.
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Sloop Smitten
Master Marine Consultant

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USA
1181 Posts
Response Posted - 11/18/2011 :  17:05:14  Show Profile
78 models had no skykight
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Tomas Kruska
Admiral

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Czech Republic
522 Posts
Response Posted - 11/19/2011 :  05:27:49  Show Profile  Visit Tomas Kruska's Homepage
Try this one like on mine. Cut the hole in the original hatch and put on the acrylic window.





Model '78 isn't perfect but is the only one I have
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JimGo
Admiral

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USA
962 Posts
Response Posted - 11/19/2011 :  06:16:38  Show Profile
Thomas, that looks really nice! Great job!
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islander
Master Marine Consultant

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USA
4018 Posts
Response Posted - 11/19/2011 :  07:02:54  Show Profile
Well there's your answer, Just send your hatch to Tomas. Allow 3-4 weeks for processing.
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Jan Briede
Navigator

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USA
162 Posts
Response Posted - 11/19/2011 :  07:20:46  Show Profile
That is sweet (great job) ... another thing to put on the list.
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 11/19/2011 :  16:47:10  Show Profile
Very nice!!!
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Dave5041
Former Mainsheet Editor

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USA
3758 Posts
Response Posted - 11/20/2011 :  09:18:24  Show Profile
Tomas, it's to bad I can't afford to stop by and see your boat up close. It really is a beauty.
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jonfew346
1st Mate

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USA
33 Posts
Response Posted - 11/22/2011 :  11:06:53  Show Profile
I am planning on doing the same thing as Tomas's boat. That was a great install. I wasn't sure if the front hatch was thick enough or if had to have some additional glass added.
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jonfew346
1st Mate

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USA
33 Posts
Response Posted - 11/22/2011 :  11:14:53  Show Profile
AH. I see. They just mounted it on top lie the windows. I was gonna try to recess it, but that might not work without adding more fiberglass for thickness.
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pastmember
Master Marine Consultant

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2402 Posts
Response Posted - 11/22/2011 :  12:29:31  Show Profile
The 89s have a real Bomar hatch. The heat that is let in is horrible, not worth the light. I covered mine and never removed it.
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JeanAndre
Navigator

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USA
224 Posts
Response Posted - 11/22/2011 :  14:58:06  Show Profile  Visit JeanAndre's Homepage
Hi Frank,

Since it does not hurt to ask...

If you ever plan on removing your Bomar hatch, I am interested in it and I can even send you my original glass hatch.

Cheers
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pastmember
Master Marine Consultant

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2402 Posts
Response Posted - 11/22/2011 :  15:11:25  Show Profile

It would not fit, the deck molds changed. And I sold the boat, my point is be careful of what you wish for.
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Tomas Kruska
Admiral

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Czech Republic
522 Posts
Response Posted - 11/23/2011 :  01:32:14  Show Profile  Visit Tomas Kruska's Homepage
No need to add more fiberglass. Thickness is about 15mm if I remember correctly. Plexi is about 5mm.

I would not stand on it but I don't think its too fragile.

There is a little of additional heat from sun, but also light and if you install some curtains its still better than original V-berth ala "black cave" .

Maybe some automotive UV foil can do the trick too.
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Voyager
Master Marine Consultant

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USA
5352 Posts
Response Posted - 11/25/2011 :  22:51:09  Show Profile
I cut a hole in my hatch on Passage (85) and the fiberglass was about 1/4" on top and bottom, and about 1/2" of wood. I'd say its about one inch thick (25.4mm). Not sure what thickness your's is.
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Steve Milby
Past Commodore

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USA
5895 Posts
Response Posted - 11/26/2011 :  09:35:10  Show Profile
My boat has two Lewmar hatches, and I covered both to keep out the heat. They really warm up the interior so much that, on a warm day, even the AC can't cool the interior of the boat to a comfortable level.
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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.