John E. Leech

GulfMark Offshore, Inc. engages in the provision of marine transportation services to the energy industry through a fleet of offshore support vessels serving major offshore energy markets in the world. It operates its business through the following segments: North Sea, Southeast Asia, and the Americas. Its services include platform supply, anchor handling, towing, marine construction support, and crewboats. The company was founded by Hy Bird in July 1958 and is headquartered in Houston, TX.

Part of Weatherford International plc, Gulfmark International, Inc. is a commercial services company. The company is based in Houston, TX.

Offshore Logistics provides helicopter transportation, maintenance and related services to the offshore oil and gas industry.