The only building remaining from the yard is the Union Iron Works Powerhouse, which is listed on the National Register of Historic Places.1956.

During the World War I period the yard built cargo ships, tankers and 2 small tugboats.

Designed in a simplified Renaissance Revival style, the powerhouse is an excellent example of a building type-the "beautiful" power house-for which the San Francisco Bay Area was nationally known.

[2][6][7] Today, the little building that once powered an entire shipyard has been converted into private office space and is closed to the public.

This article incorporates public domain material from websites or documents of the National Park Service.