Weird Bow Chocks on 1972 Pearson 30

[ShalomOrchard]

I have a 1972 Pearson 30.  One of my bow chocks pulled off during a storm.

I think the bow chocks are kind of weird.  they are right up at the bow, within a foot of the bow,
and they are up on little wooden blocks.  Is this stock for a 1972 Pearson 30, or some remuddling?
Do I need to have them up on these little blocks?  Where can I get replacement bow chocks?
Are they galvanized, or what?  I don't have a lot of spit and polish, so it's hard to tell.

Thanks, Jim Baranski, Shalom Orchard, Franklin ME

[chuck stas]

looks like there might be some leaks up there.
If it were mine I'd open it up to see, then rebuild as needed.
It should be a fun project, Learning experience.
Good Luck