I looked at the door yesterday and there is a tiny set screw exactly as DD pictured it above. So I think it would probably be possible to dismantle it and get the door open. However, I am going to bend some wire and poke it through the air vent at the bottom of the door and try to hook the door latch on the inside, If that works the wire will be stored under the v berth mattress with the old paper charts.
thanks for the input.