Zeke-
Some of the Jags were built with cabins; I've attached photos of Doug's "On Time". Look carefully at the port and starboard side of the cockpit photo and you can see the doors to the cabin.
Also, there's room under the deck on most of them to make a low profile day "cabin", but you'd have to access it through the deck hatch. I've been thinking about doing that to ours, but I doubt that we'd ever use it.

Due