[GingisK]

I'm not finding the phrase, "exactly 300 cubits" in the article anywhere

Me either. It bleed into my brain from post 8. This old brain is getting tricky.

I'd be more interested in Noah's tools and construction methods. Expecting the wreck to survive this long is unusual. Like other posters said, it was probably salvaged and repurposed.

[ealgeone]

I hear ya!

I would agree the boat was dismantled for various reasons.