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Last seen: 2 months 3 weeks ago
Joined: 9/27/16
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inserting a smaller porthole

Has anyone cut into the rear porthole in the galley to insert a smaller opening porthole?

Thanks, John Hill

pkeyser's picture
Last seen: 14 hours 2 min ago
Joined: 5/18/13
Posts: 415


Not sure what year and boat model you have. Might want to add it to your signature.

We have a MKII. I assume you are talking about the fixed cabin window over the stove? If so, I can think of several reasons for not attempting this. The first is the window has a slight bow. Any openning porthole frame would be flat meaning you would have to use a thick gasket in the flange area, which might make it prone to leaking. If you torqued down on opening port flange and frame screws, it would induce stress in the cabin window - more stress may lead a greater chance of developing cracks, and the fixed window pulling free of it's adhesive seal to the cabin.

Just my 2 cents.


Paul & Wendy Keyser
"First Light"
Newburyport MA/Rye NH
2005 C36 MKII #2257
Wing, M35B

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