Senior Moment Member
Join Date: Jun 2011
Location: West Vancouver B.C.
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Re: Replacing these with widows that open?
Pappy is right - that style of deadlight simply can't be converted to any kind of opening port without screwing up the looks of your boat.
It looks like you have room on your cabin top for up to four cowl vents. Those plus a wind scoop for the forehatch should provide all the ventilation you need - especially if you spend the coin for some NICE stainless cowls, not those nasty PVC things. They won't cost much, if any, more than opening ports either and will be much simpler to install.
I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.