re: How does this boat work?

The first expedition type yachts were built here in Louisiana in Morgan City. They took a offshore supply vessel and fancied it up.

Normally you can build in the 100ft range or like 10-15 million, then it cost another 5-10 plus to decorate it (I have seen a $5 mil Picasso on a boat). Add in the "toys" and it's probably another $5mil. I saw a $1 mil sub when I was a kid get loaded on.

New you would sell a similar boat for like $25-30 mil and most high value interior decorations and toys would get taken off.

My dad used to work for a company that built them. Their #1 client for a while made a small fortune building the boats and then selling them to his super wealthy friends. I met that guy a few times and would sit in there like a fly on the wall just listening.