Ocean Shipholdings, Inc.

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Ocean Ships, Inc.

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Ocean Duchess, Inc.

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  • Repair/Maintenance
  • Leasing/Chartering
  • Ship Management
  • Ship Building
  • Project Management
  • Marine Services


Ocean Shipholdings, Inc. (“OSI”) is a full-service marine operating company providing environmentally safe and efficient ocean transportation to its customers. Headquartered in Houston, Texas, OSI has built and operated ships for over 35 years. OSI’s main business is the turnkey technical management of ocean-going ships.

Ship operations are worldwide including transportation of petroleum products, special operations, and ships containing cargo in support of the U.S. military. Currently the company operates 22 ships under contract. Vessel maintenance is also performed worldwide. OSI has extensive business relationships with shipyards and ports that enable competitive service contracting. Crews can be provided for shipboard work through OSI crewing contracts tailored to meet customer needs.

OSI was initially formed to operate U.S. flag tankers in 1981, and remains privately owned today.

OSI's ship operations are conducted in accordance with all quality, environmental and safety regulations of the ISO/ISM codes, as well as complying with the highest ethical business standards including the Foreign Corrupt Practices Act. OSI received certification from ABS-QE for ISO 14001 for environmental management and ISO 27001 for information security.

OSI employs full-time shore staff personnel in our offices in Houston, Texas. Support of customer operations may require agents or direct employee support or shipyard attendance. OSI has a team of highly qualified marine engineers able to perform emergency repairs to ships worldwide.

OSI currently operates and maintains two heavy lift cargo barge carrier vessels and two Fast Sealift Ships and four Roll On Roll Off ships for the U.S. Department of Transportation, Maritime Administration Ready Reserve Force. The vessels are maintained ready to carry a variety of larger cargo items, e.g., barges, LCACS, lighterage modules, small boats, vehicles and containers. The company also operates special mission ships, Float On Float Off ships, and Large Medium Speed RORO ships for the US Department of the Navy. In addition, OSI continues to operate a refined products tanker, one of an original fleet of five the company designed and supervised the construction of, over 35 years ago for the Military Sealift Command.

OSI’s commitment to environmental excellence begins at the senior level of management. In accordance with the International Safety Management (ISM) Code, ISO 9001:2015, ISO 14001:2015 and ISO 27001:2013, OSI has clearly set forth its objectives and goals with respect to quality, safety, the environment, and information security. Clear and concise policies have been established and are maintained by personnel trained in all aspects of compliance. The company maintains all vessels and equipment in an appropriate condition to ensure fitness for the intended service. OSI’s safety and environmental record over 42 years of continuous vessel management is unparalleled.

We stand ready to serve you

We encourage potential customers to contact us for additional information.