It’s fun to watch construction cameras in fast forward. This is a ship being built at Philly Shipyard Inc. (and by way, you can argue whether it is lazy to use the abbreviation for Philadelphia and whether “ship yard” should be one word or two, but this is the actual name of the company.
I learned from this (paywalled) Philadelphia Inquirer article that U.S. shipyards are not competitive in the market for international oceangoing cargo vessels. However, there is something called the Jones Act that requires domestic trade to be done on U.S.-built and U.S.-crewed ships. So this includes trade between the U.S. mainland, Hawaii, and Guam for example. This seems a bit inefficient to me, but I can also see an argument to maintain the ability to build technology domestically with obvious military use. The shipyard also has military and government contracts which, and so sorry I just can’t resist the terrible pun, keep it afloat. I am a dad after all, and I have to keep my dad jokes at the ready.