She fill up, she sink
If there was any flotation in the 23, it was very well hidden. I have worked on the keel bolts, I have sat in the bilge next to the batteries, and I have used every storage bin. No sign of flotation. And you are right to be cautious, especially if you have added a downwind sail. The boat has a fairly low downflooding angle, and I have had water over the rail quite often. This style of boat will fill quickly if broached.