Overseas Shipholding Group Inc.

Tampa, FL Part of Saltchuk Resources, Inc.

UEI
NLSAJXJ9NZR4
CAGE
7P9C6
Primary NAICS
483111 Deep Sea Freight Transportation
SAM.gov registration
Active through

Company facts

Self-certified in SAM.gov
  • For Profit Organization
Entity structure
Corporate Entity (Not Tax Exempt)
Corporate family
SAM.gov registration date
Physical address
302 Knights Run Ave #1200, Tampa, FL 33602, USA
Website
osg.com
Founded
1948
Employees
251-1K
Estimated annual revenue
$250M-$500M
Industry
  1. Industrials
  2. Transportation
  3. Marine
SIC code
44 Water Transportation
Profiles

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .

Contract obligations

Most of Overseas Shipholding Group Inc.'s contract dollars go to its subsidiaries: $22.7 million across 2 awardees in PSC V124 in FY2025.

Contract awards

Award Agency Obligated Awarded
Definitive Contract N0003398C5102 Department of the Navy $690,289

Grant awards

Award Agency Obligated Awarded
Bipartisan infrastructure law (BIL) - carbon ocean and storage transport 20 the overall objective of the carbon ocean… DEFE0032510 National Energy Technology Lab $3,152,650
Tampa regional intermodal carbon hub t-rich the project's objective is to determine that the development of the tampa… DEFE0032464 National Energy Technology Lab $401,261
New cooperative agreement. Activities to be performed evaluation of cost-effective integration of innovation on board… 693JF72350006 Maritime Administration $107,000

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About the company

Written by GovTribe AI ·

Overseas Shipholding Group Inc., a subsidiary of Saltchuk Resources Inc. based in Tampa, Florida, operates as a prime recipient of federal cooperative agreements focused on marine carbon transport infrastructure and vessel decarbonization feasibility studies. The vendor has received four federal awards totaling $4.4 million obligated across three distinct customer agencies since 1998, operating exclusively as a prime recipient with no subcontract role in the federal footprint.

Overseas Shipholding Group's recent federal work centers on carbon capture, utilization, and storage (CCUS) transportation and port infrastructure development under the Department of Energy's Office of Fossil Energy and Carbon Management and the Department of Transportation's Maritime Administration. The vendor is recipient on two cooperative agreements from DOE's Office of Fossil Energy: a Bipartisan Infrastructure Law-funded "Carbon Ocean and Storage Transport 20" (COAST20) project running through December 2026, designed to prove technical feasibility and cost-effectiveness of a marine transport system for captured carbon dioxide within the United States for permanent underground sequestration, and a "Tampa Regional Intermodal Carbon Hub T-RICH" cooperative agreement (CFDA 81.089, Fossil Energy Research and Development) awarded September 16, 2024 for $401,261, which evaluated technological feasibility and commercial viability of a comprehensive intermodal transportation hub for carbon capture and storage at Port Tampa Bay. The vendor also completed a cooperative agreement with the Maritime Administration (closed out September 1, 2024) evaluating cost-effective integration of on-board carbon capture innovation for vessels, with deliverables intended for public release and benefiting MARAD and OSG Ship Management Inc.

The Department of Energy's Office of Fossil Energy accounts for two awards; the Department of Transportation's Maritime Administration and the Department of the Navy each account for one award. A single award faces ultimate completion within the next twenty-four months. Overseas Shipholding Group operates as the parent of five named subsidiaries including OSG Ship Management Inc., Mykonos Tanker LLC, Santorini Tanker LLC, Maremar Tanker LLC, and OSG America Operating Company LLC, positioning the corporate structure to integrate shipping operations with federal sustainability and decarbonization research initiatives. The vendor's federal engagement pattern reflects emerging maritime decarbonization and carbon transport infrastructure development within DOE and DOT rather than traditional maritime shipping or logistics contracting.

Quick answers

Is Overseas Shipholding Group Inc. registered in SAM.gov?

Yes. Overseas Shipholding Group Inc.'s SAM.gov registration is active through September 9, 2027.

How does Overseas Shipholding Group Inc. rank among federal contractors?

Overseas Shipholding Group Inc. ranked #17 in PSC V124, #29 in NAICS 4831 and #30 in NAICS 483 in FY2025.

What is Overseas Shipholding Group Inc.'s most recent federal award?

Overseas Shipholding Group Inc.'s most recent federal grant award is Bipartisan infrastructure law (BIL) - carbon ocean and storage transport 20 the overall objective of the carbon ocean… (DEFE0032510), from National Energy Technology Lab, on January 1, 2025.

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See Overseas Shipholding Group Inc.'s full federal record

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  • Federal grant awards
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