My boat is about 2,800 miles away, so I can't measure for you, but - just to be clear - the hatch sets about mid-way above the v-berth, so there is no sole to be had there. There is a cushion that can be removed that is at the entry to the v-berth, but the hatch is further forward from that.
No "step down" into the v-berth area like on some boats. Entry into the v-berth is via crawling on hands and knees.
I am 5'10" on a good day, and do not have the height between the v-berth cushion and the hatch to sit upright. We do have a 3" memory foam on top of the v-berth cushions, making that space less.
That sounds more austere than the actual usage. Some people have cut the bulkhead (non-structual) on the co-pilot side, allowing easier entry/egress to the v-berth. There is a small step up (about 3" or so) from the cabin sole at the entry to the v-berth. As a side note, in the CD-25, when you are standing on the cabin sole, you are standing on the inside of the hull (slight curvature to the sole in the cabin).
Hope you get the opportunity to check one out in person.
Best wishes,
Jim B.
Here is an old image from right after we picked up our boat, giving you some perspective of the opening. Joan is 5'7".
