The bulkhead should float at the top and not be attached to the deck. It should be tabbed to the hull around the periphery. The deck "floats" and the chainplate should pass though the deck and be securely anchored to the bulkhead. Check my
old Rhapsody blog for some more photos. Below shows the trim piece that covers the void.
![[Linked Image from 3.bp.blogspot.com]](https://3.bp.blogspot.com/-m9DkiArc2Ow/UMzrRJVCl4I/AAAAAAAABMc/pAJP6e7xTmI/s1600/31-new-stbd-chainplate.jpg)
![[Linked Image from 1.bp.blogspot.com]](https://1.bp.blogspot.com/-Oh7aWRHHUy4/VC1Uai42KOI/AAAAAAAAFJY/Xi7I68bcPHk/s1600/2012-12-15_14-09-33_555.jpg)