That chin looks a bit rough.
When anon was young, our neighbor had one like this. Anon recalls the centerboard stops were secured so that the centerboard couldn't be pushed up.
When anon was young, the White Album was one of my treasures. Sister heard a rumor that if the album cover was heated in the oven it revealed a picture of John and Yoko naked. So she put the cover in the oven, neglecting to take the actual 2 records out first. Cooked the cover brown and ruined the records. Couldn't replace them either because they couldn't be found for sale anymore.
Anon got seasick like crazy on the neighbor's boat. Yes the centerboard could be raised and lowered, but it was secured to prevent rising even though it had a lead weight at the bottom.
Finally got over seasickness when a storm hit before we could make it to safety. I was so terrified the sickness left me and subsequently never returned.