Semper Offshore LLC
Winchester, MA
- UEI
- HJ8BVDGH4LG9
- CAGE
- 8M0H2
- Primary NAICS
- 483113 Coastal and Great Lakes Freight Transportation
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Sole Proprietorship
- NAICS codes registered in SAM.gov
-
- 483113 Coastal and Great Lakes Freight Transportation Primary
- 237130 Power and Communication Line and Related Structures Construction
- 237990 Other Heavy and Civil Engineering Construction
- 321114 Wood Preservation
- 483112 Deep Sea Passenger Transportation
- 488310 Port and Harbor Operations
- 488320 Marine Cargo Handling
- 488330 Navigational Services to Shipping
- SAM.gov registration date
- Physical address
- 31-33 Clark St, Winchester, MA 01890, USA
- Website
- semperoffshore.com
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- SIC code
- 87 Engineering & Management Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Charter vessel research services for 10 days | National Oceanic and Atmospheric Administration | $165,876 | |
| Charter vessel services for up to 9 days | National Oceanic and Atmospheric Administration | $154,282 | |
| Vessel charter | National Oceanic and Atmospheric Administration | $198,592 | |
| Vessel charter to conduct north atlantic right whale research in the great south channel and the gulf of maine | National Oceanic and Atmospheric Administration | $943,422 | |
| Vessel charter for turtle survey | National Oceanic and Atmospheric Administration | $168,880 |
About Semper Offshore LLC
Semper Offshore LLC is a marine support and offshore marine services company that provides marine construction services, scientific and military research support, and geophysical ROV AUV surveys to the federal government. Their vessels are equipped to perform a wide variety of marine services.
Through prime contract awards, Semper Offshore has provided charter vessel research services, charter vessel services, and vessel charters to the Department of Commerce's National Oceanic and Atmospheric Administration (NOAA). These services have supported research on North Atlantic right whales and sea turtles. The awards have ranged from $98,950 to over $1 million, utilized set asides for small businesses, and featured performance periods from 2020 through 2024. As a subcontractor, Semper Offshore has provided goods and services in support of prime contracts held by General Dynamics Mission Systems.
SBA capabilities narrative
Semper Offshore operates commercial vessels that perform many types of marine services; marine construction, scientific and military research, geophysical survey work. Semper Offshore has extensive experience working with global companies including Orsted, Excelerate Energy, WHOI, Engie, General Dynamics, Raytheon, USGS, Navy-NUWC, Tetra Tech, and JHU-Applied Sciences. Our vessels are operated by the best trained crew available. Each with years of experience on many highly complex projects along the eastern seaboard. We operate under a unique Management System that maintains the highest standards for safety, environment, and quality. Our vessels are outfitted to meet SOLAS standards and are USCG certified. They are also inspected by ABS, OVID, and CMID. Semper is based in Charlestown, MA where we have shore support for dockage, crane service, warehousing, and staging facilities. We have partnered with other shore facilities in MA, Rhode Island, Connecticut, NY, NJ, and Virginia.
Quick answers
What is Semper Offshore LLC's UEI?
Semper Offshore LLC's Unique Entity ID (UEI) in SAM.gov is HJ8BVDGH4LG9.
What is Semper Offshore LLC's CAGE code?
Semper Offshore LLC's CAGE code is 8M0H2.
What is Semper Offshore LLC's primary NAICS code?
Semper Offshore LLC's primary NAICS code is 483113 (Coastal and Great Lakes Freight Transportation).
Where is Semper Offshore LLC located?
Semper Offshore LLC's physical address in SAM.gov is 31-33 Clark St, Winchester, MA 01890, USA.
Is Semper Offshore LLC registered in SAM.gov?
Yes. Semper Offshore LLC's SAM.gov registration is active through June 18, 2027.
What is Semper Offshore LLC's most recent federal award?
Semper Offshore LLC's most recent federal contract award is Charter vessel research services for 10 days (1305M323PNFFM0266), from National Oceanic and Atmospheric Administration, on May 25, 2023.
On GovTribe
See Semper Offshore LLC's full federal record
- Federal contract awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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