Name: Ms. Tree 
Value: $1 billion*

Elon Musk’s yacht, Ms. Tree, was formerly called Mr. Steven. Ms. Tree and her sister yacht, Ms. Chief, are both chartered by Musk’s company, SpaceX. The two are used as platforms to recover rocket payload fairings (nose cones), and they both have huge nets intended to catch the fairings. The Tesla executive launched Ms. Tree in 2014.

Ms. Tree especially has been used with the SpaceX Falcon 9. In 2018 and 2019, the ship caught a descending fairing before it hit the water. The fairing came from the STP-2 mission. It was Ms. Tree’s first catch after it had been renamed.