On Tue, 30 Sep 2003 21:29:48 -0400, something compelled "Bruce"
, to say:

Any SJ21 owners out there that are familiar with the "box like" structures
inside the cabin that are moulded into the hull? There is a box on the
starboard side next to the keel winch that is about 18" cube and would make
a great place to install a small sink, but I not quite sure what I might
find if I cut into it.
I tried to post this on the SJ21 club site but it didn't seem to post. Any
help would be appreciated.

Mine had a teak cover on the top, and I used the space to store
things like the vang and flares and whatnot. Putting a sink in
there should be no problem, but to where are you going to drain
it?