The bulk of shipbuilding is in China. Their shipyards are working on their navy.So I heard in passing the other day that there is an actual lack of shipping vessels to keep up with long term demand due to lack of production capacity. Lotta shipyards no longer operational.
Can anyone elaborate?

Foreign orders boost China shipbuilding firm linked to military
US think tank says shipping firms need to reconsider approach given shipyards links to military.

Why Is There a Shortage of Container Ships in the World Container Fleet? - 7ConNetwork
Effects of COVID-19 continue to cause supply chain disruptions and shortages. Now, a shortage of shipping vessels is becoming another hardship for the industry, and new orders of ships are unlikely to solve the capacity shortage in time.
It'll be interesting to watch the US try to continue to be a maritime power with all of its shipbuilding in China.