At their shipyard at Point and Erie Streets, the company built luxury yachts and also commercial ships.
The John H. Mathis Company built a variety of commercial and naval vessels, including freighters, ferries, and fishing boats, FS ("Freight and Supply") ships for the Army, minesweepers, net tenders, patrol boats, lighthouse tenders, tugs, and barges.
[2] In 1924/1925, Mathis built 30 75-foot patrol boats (known as Six-Bitters) ordered by the United States Coast Guard at its Camden shipyard (CG-100 through CG-114 and CG-278 through CG-292).
[3] By mid-1942 increased demand meant that the Camden yard capacity was needed for government contracts, so the Mathis Yacht Building Co. relocated to Gloucester City, New Jersey, just downriver of Camden, and was renamed John Trumpy & Sons in 1943.
[2] In 1962, the Annapolis yard was destroyed in a fire and a year later, at the age of 84, John Trumpy died.