Despite its name, New York Shipbuilding was in New Jersey rather than New York. Its yard stood directly across the river from Philadelphia, within that regional shipbuilding area. This was the American yard mentioned during the Portland-class cruiser discussion.
Notable Point · 43:09-43:24
New York Shipbuilding's New Jersey location
A brief correction places the misleadingly named American shipbuilder in New Jersey, directly across the river from Philadelphia.