Headroom
I own a 23.5, a nearly identical but older model. It does not have standing headroom with the hatch closed. Just guessing, but I'd say it about 4'8" -5'. There is plenty of room for a 6 footer like myself to sit, but using the head is a challenge. With the hatch open and the optional canvas camper top there is standing headroom in the area enclosed by the camper top. This is one of the disadvantages of a water ballast boat as the ballast tank takes away headroom. I love my 23.5, but the primary creature comfort feature I'll be looking for on my next one will be standing headroom.Alan Long