- Business
- Overseas Shipholding Group, Inc. (OSG) is a leading provider of energy transportation services specializing in the ownership and operation of a modern fleet of more than 20 U.S.-flagged vessels. Its core products and services include the transportation of crude oil, refined petroleum products, and renewable fuels for major independent and state-owned oil companies, oil traders, and government entities, primarily operating within U.S. and international markets. OSG's fleet consists of crude oil tankers and product carriers designed for safe, efficient, and reliable maritime transport in the energy sector.
Founded in 1948 and headquartered in Tampa, Florida, OSG operates strategically in energy shipping with a focus on U.S. Flag vessels and maintains commercial and technical ship management operations to support its fleet worldwide. The company caters to the needs of energy producers, refiners, and traders, serving as a preferred cargo carrier in the global energy transportation industry.
A significant recent development for OSG is its acquisition by Saltchuk Resources, Inc., completed in July 2024 for approximately $950 million. This transaction transformed OSG into a wholly owned subsidiary of Saltchuk, enhancing Saltchuk's energy shipping business segment while allowing OSG to remain independently managed within Saltchuk’s diverse portfolio, which includes domestic and international shipping, logistics, marine services, energy distribution, and air cargo. This acquisition represents a major strategic shift and expansion for OSG, strengthening its operational capabilities and market position under Saltchuk's ownership.
Overall, Overseas Shipholding Group’s primary business lies in the maritime transport of energy commodities across global and domestic waters, supported by its established fleet, operational expertise, and recent alignment with Saltchuk to leverage broader resources and industry presence.
This comprehensive description reflects OSG’s products, services, and latest changes as of late 2025.