Alden,

I’ve put a few holes in my R22, but that’s a hole I don’t think I’d make.

My solution for mounting a compass was to mount it so that it sits on the cockpit floor just aft of the companionway.  I hardly ever step on it.  I could supply pictures if you’re interested.

If you’ve already purchased the bulkhead mount compass, a less invasive approach would be to mount it to a board that can slide into the slots used by the companionway door.

If you’re determined to mount the compass to the bulkhead, I really can’t offer much advice, but you should be aware that there are two ’skins’ to the bulkhead, an inner and an outer.  There’s about an inch between them.  Near the area where the pop-top support tube attaches to the bulkhead, there’s wood backing between the skins.  Otherwise, there’s just air. (At least that’s how it is on my boat.)

Best of luck,

Peter Nyberg
Coventry, CT
s/v Silverheels )1988/2016)

> On Dec 21, 2020, at 12:56 AM, Alden Blackwell via Rhodes22-list <rhodes22-list at rhodes22.org> wrote:
> 
> My winter project is to install a bulkhead mount Plastimo 101 compass in the bulkhead to the left of the companionway.  I am not sure exactly where to locate it.  Cutting a hole in the bulkhead makes me nervous.  Can someone provide me with dimensions relative to the companionway etc as to where to cut the hole?  Has anyone tried to do this? 
> Alden
> S/V Edelweiss 
> a_blackwell at verizon.net