During World War II Robert Jacob Shipyard built PT boats and Tugboat for the United States Navy.
During World War I Robert Jacob Shipyard built Submarine chaser boats.
When not building war boats, the shipyard built yachts, schooners and sloops.
After the war, in 1946, Robert Jacob Shipyard was sold to Consolidated Shipbuilding of Morris Heights.
In 1958, Consolidated closed and sold to Wesley Rodstrom run as a yacht repair yard.