It's known as a "stand up head" for just that reason.

Mike
s/v Wind Lass ('91)
Nissequogue River, NY

On Sat, July 27, 2024 9:32 pm, Kenwood _ wrote:
> Hey all! As I'm starting to attack the quality of life mods that I want to
> do in my boat I'm noticing that your more modern boats have some stuff I'm
> really jealous of!
>
> I'm looking at a lot of ventilation options for the head but they're all
> kind of undersized or made for RVs. The new boats seem to have a hatch
> over
> the head! That's really awesome, but I can't seem to find hatches that are
> that small it's not a very large space to put in a hatch and I'm worried
> about cutting away too much of the roof.
>
> Does anybody have hatch dimensions or perhaps know where they can be
> sourced? A hatch that could be opened Right above the head would be better
> than any RV fan ventilator I can think of and it might even give you some
> headroom! Thanks!
>