One of the U.S. Navy's WWI era cargo ships had two smokestacks. She was foreign built.
This page features a table (with links to individual ships) of World War I era U.S. Navy cargo ships with two smokestacks, plus a photograph of each ship in this group.
ONE SHIP with TWO SMOKESTACKS:
Click the small photographs to prompt a larger view of the same image with a descriptive header.
ONE SHIP -- Foreign built