It can be tough to be a US shipyard.

The demand for US commercial ships — the large, oceangoing bulkers, boxships, tankers and gas carriers that make up the backbone of global trade — is tiny on a global scale and many shipyards survive on a mix of government and commercial work.

That balance could be changing, though, with US President Joe Biden making a push for a massive expansion of offshore wind that would necessitate the construction of several purpose-built vessels at US shipyards.