In simplest terms I look at buying a ship as an Uber driver would buy a used car. Asset value + earnings power.
Example. I'm an Uber driver who can buy a used car valued at $10,000 for $5,000. OK, I buy it and drive it for 5 years earning money. Then someone offers me $15,000 for the car. I would probably sell it.
Btw used car prices in the U.S skyrocketed during the pandemic. Coming back down again.