John Dane

United States Marine, Inc. provides ship building and repairing services. It offers designs, builds, and tests boats in house. It also offers full documentation, integrated logistical support services. The company was founded by Tom Dreyfus Jr. in 1971 and is headquartered in Gulfport, MS.

Gulf Coast Shipyard Group, Inc. designs and constructs offshore commercial vessels, offshore and inland barges, oil spill response and patrol vessels-as well as oil field support vessels-in aluminum, steel and composite. The company was founded on May 29, 2013 and is headquartered in Gulfport, MS.

Trinity Yachts, LLC designs, engineers, constructs, and delivers custom steel and aluminum yachts. It builds custom sport yachts and motor yachts. The company was founded by William S. Smith, III and John Dane, III in 1988 and is headquartered in Gulfport, MS.

Halter Marine Group, Inc. provides designing, construction, conversion and repair services which include repairing vessels, offshore drilling rigs and engineered products to government and commercial markets. It operates in three business segments, namely vessels, rigs and engineered products. The firm's products include offshore support vessels, double hull tank barges, offshore tugs, harbor tugs, towboats, oceanographic research and survey ships and high-speed patrol boats. The company is headquartered in Gulfport, MS.