Tidewater Inc., together with its subsidiaries, provides offshore support vessels and marine support services to the offshore energy industry through the operation of a fleet of marine service vessels worldwide. It provides services in support of offshore oil and gas exploration, field development, and production, as well as windfarm development and maintenance, including towing of and anchor handling for mobile offshore drilling units; transporting supplies and personnel necessary to sustain drilling, workover, and production activities; offshore construction, and seismic and subsea support; geotechnical survey support for windfarm construction; and various specialized services, such as pipe and cable laying. The company operates anchor handling towing supply vessels, platform supply vessels, crew boats, utility vessels, and offshore tugs. The company serves integrated and independent oil and gas exploration, field development, and production companies; mid-sized and smaller independent exploration and production companies; foreign government-owned or government-controlled organizations, and other related companies; offshore drilling contractors; and other companies, such as offshore construction, windfarm development, diving, and well stimulation companies. Tidewater Inc. was incorporated in 1956 and is headquartered in Houston, Texas.

Oceaneering International, Inc. provides engineered services and products, and robotic solutions to the offshore energy, defense, aerospace, manufacturing, and entertainment industries worldwide. It operates through Subsea Robotics, Manufactured Products, Offshore Projects Group, Integrity Management & Digital Solutions, and Aerospace and Defense Technologies segments. The company offers remotely operated vehicles (ROVs) for drill support and vessel-based services, including subsea hardware installation, construction, pipeline inspection, survey and facilities inspection, maintenance, and repair; ROV tooling; and survey services, such as hydrographic survey, positioning services, and autonomous underwater vehicles for geoscience. It also provides distribution and connection systems, including production control umbilicals and field development hardware, pipeline connection, and repair systems to the energy industry; and autonomous mobile robotic technology and entertainment systems to various industries. In addition, the company offers subsea installation and intervention, including riserless light well intervention inspection, maintenance, and repair services; installation and workover control systems, and ROV workover control systems; diving services; project management and engineering; and drill pipe riser services and systems, and wellhead load relief solutions. Further, it provides asset integrity management, software and analytical solutions for the bulk cargo maritime industry, and software, digital, and connectivity solutions for the energy industry, as well as government services and products, including engineering and related manufacturing in defense and space exploration activities to the United States' government agencies and their prime contractors. Oceaneering International, Inc. was founded in 1964 and is headquartered in Houston, Texas.

Genesis Energy, L.P. provides integrated suite of midstream services in crude oil and natural gas industry in the United States. It operates through Offshore Pipeline Transportation, Soda and Sulfur Services, Marine Transportation, and Onshore Facilities and Transportation segments. The Offshore Pipeline Transportation segment engages in offshore crude oil and natural gas pipeline transportation and handling operations, as well as deep water pipeline servicing. This segment also owns interests in offshore crude oil and natural gas pipeline systems, platforms, and related infrastructure. The Soda and Sulfur Services segment produces, markets, and sells soda ash; and provides sulfur removal services. This segment also owns and operates soda ash production facilities, underground trona ore mines and brine solution mining operations and related equipment, and logistics and other assets; and sells sodium hydrosulfide and caustic soda to industrial and commercial companies involved in the mining of base metals. The Marine Transportation segment offers waterborne transportation of petroleum and crude oil in North America. This segment owns a fleet of 91 barges and 42 push/tow boats. The Onshore Facilities and Transportation segment offers onshore facilities and transportation services to crude oil refineries and producers by purchasing, transporting, storing, blending, and marketing crude oil and refined products; and operates trucks, trailers, railcars, and terminals and tankage in various locations along the Gulf Coast. This segment also transports crude oil, as well as owns four onshore crude oil pipeline systems and four operational crude oil rail unloading facilities. The company was incorporated in 1996 and is headquartered in Houston, Texas.

Seadrill Limited provides offshore contract drilling services to the oil and gas industry worldwide. The company owns and operates drill ships, semi-submersible rigs, and jack-up rigs for operations in shallow and ultra-deep-water in benign and harsh environments. It serves oil super-majors, state-owned national oil companies, and independent oil and gas companies. Seadrill Limited was formerly known as Seadrill 2021 Limited. The company was founded in 2005 and is based in Hamilton, Bermuda.

SFL Corporation Ltd., a maritime and offshore asset owning and chartering company, engages in the ownership, operation, and chartering out of vessels and offshore related assets on medium and long-term charters. The company operates in various sectors of the maritime, and shipping and offshore industries, including oil transportation, dry bulk shipments, chemical transportation, oil products transportation, container transportation, car transportation, and drilling rigs. As of December 31, 2023, the company owned seven crude oil carriers, six oil product tankers, 15 dry bulk carriers, 32 container vessels, one jack-up drilling rig, one ultra-deepwater drilling rig, and five car carriers. It primarily operates in Bermuda, Canada, Cyprus, Liberia, Namibia, Norway, Singapore, the United Kingdom, and the Marshall Islands. The company was formerly known as Ship Finance International Limited and changed its name to SFL Corporation Ltd. in September 2019. SFL Corporation Ltd. was founded in 2003 and is based in Hamilton, Bermuda.

Teekay Corporation Ltd. engages in the crude oil and other marine transportation services worldwide. The company owns and operates crude oil and refined product tankers. It also provides ship-to-ship support services; tanker commercial management operation services; and operational and maintenance marine services. As of March 1, 2024, the company operated a fleet of approximately 53 owned and chartered-in vessels. It serves energy and utility companies, oil traders, oil consumers and petroleum product producers, government agencies, and other entities that depend upon marine transportation. The company was formerly known as Teekay Corporation and changed its name to Teekay Corporation Ltd. in October 2024. Teekay Corporation Ltd. was founded in 1973 and is headquartered in Hamilton, Bermuda.

Orion Group Holdings, Inc. operates as a specialty construction company in the building, industrial, and infrastructure sectors in the United States, Alaska, Hawaii, Canada, and the Caribbean Basin. It operates in two segments, Marine and Concrete. The company provides marine construction services, including construction, restoration, dredging, maintenance, and repair of marine transportation facilities and pipelines, bridges and causeways, and marine environmental structures. Its marine transportation facility projects comprise cruise ship port facilities, private terminals, special-use navy terminals, recreational use marinas and docks, and other marine-based facilities, as well as building or rehabilitating public port facilities for container ship loading and unloading. The company also offers on-going maintenance and repair, inspection, emergency repair, and demolition and salvage services. Its marine pipeline service projects include the installation and removal of underwater buried pipeline transmission lines; the installation of pipeline intakes and outfalls for industrial facilities; the construction of pipeline outfalls for wastewater and industrial discharges; river crossing and directional drilling; the creation of hot taps and tie-ins; and inspection, maintenance, and repair services. The company's bridge and causeway projects include the construction, repair, and maintenance of overwater bridges and causeways, as well as the develops fendering systems in marine environments. The company also provides specialty services, such as design, salvage, demolition, surveying, towing, diving and underwater inspection, excavation, and repair services. In addition, it offers elevated concrete pouring for columns, elevated beams, and structural walls; and light commercial services comprising slabs, sidewalks, ramps, and tilt walls. The company was founded in 1994 and is headquartered in Houston, Texas.

Diamond Offshore Drilling, Inc. provides contract drilling services to the energy industry worldwide. As of December 31, 2023, the company operated a fleet of 13 offshore drilling rigs, including four drillships, seven semisubmersible rigs, and two managed rigs. It serves independent oil and gas companies, and government-owned oil companies. Diamond Offshore Drilling, Inc. was founded in 1953 and is headquartered in Houston, Texas.