| SPAR Clients | Location | Type Business | SPAR Services |
| | | | |
| ADI Limited | Australia | Shipyard: New Construction & Repair | Cost Estimating |
| ASC Shipbuilding Pty, Ltd | Australia | Shipyard: New Construction & Repair | Cost Estimating |
| Avondale Shipyards | Louisiana | Shipyard: New Construction & Repair | R&D, Cost Estimating |
| Bath Iron Works (BIW) | Maine | Shipyard: New Construction & Repair | R&D, Cost Estimating |
| Bay Shipbuilding Company | Wisconsin | Shipyard: New Construction & Repair | SPAR EVM Systems |
| Bender Shipbuilding Company | Alabama | Shipyard: New Construction & Repair | SPAR EVM Systems |
| Bethlehem Shipyard (BethShip) | Maryland | Shipyard: New Construction & Repair | R&D |
| BMT Designers & Planners | Virginia | Naval Design & Engineering Firm | R&D, Cost Estimating |
| China Shipbuilding & Offshore International Co.,Ltd. | China | University Maritime Studies | SPAR EVM Systems |
| Collingwood Shipyards | Canada, Ont. | Shipyard: New Construction & Repair | SPAR EVM Systems |
| Computer Sciences Corporation | Virginia | Naval Design & Engineering Firm | Cost Estimating |
| Coopers & Lybrand | Virginia | DoD Consulting Firm | SPAR EVM Systems |
| Correct Marine Enterprise | Russia | Shipyard Consultant | SPAR EVM Systems |
| Curacao Drydocks Ltd | Curacao, NA | Shipyard: Repair | SPAR EVM Systems |
| Davie Shipbuilding | Canada, PQ | Shipyard: New Construction & Repair | SPAR EVM Systems |
| DRS Technologies | Maryland | Consultant & Defense Contractor | Software Engineering |
| EISA Shipyard | Brazil | Shipyard: New Construction & Repair | Publications |
| Fraser Shipyards | Wisconsin | Shipyard: New Construction & Repair | Cost Estimating |
| George Sharpe & Company | New York | Naval Design & Engineering Firm | Cost Estimating |
| Gibbs & Cox | New York | Naval Design & Engineering Firm | Cost Estimating |
| Halifax Shipyard Ltd | Canada, NS | Shipyard: New Construction & Repair | SPAR EVM Systems |
| Harbin Engineering University | China | Academic | SPAR EVM Systems |
| Herbert Engineering Corporation | Maryland | Naval Design & Engineering Firm | Cost Estimating |
| Ingalls Shipbuilding | Mississippi | Shipyard: New Construction & Repair | R&D, Cost Estimating |
| Korea National Defense University | Korea | University | SPAR EVM Systems |
| Kvaerner Masa Maine | Maryland | Naval Design & Engineering Firm | R&D |
| Lockheed Martin Corporation | California | Naval Design & Engineering Firm | Cost Estimating |
| M. Rosenblatt & Son | Virginia | Naval Design & Engineering Firm | R&D, Cost Estimating |
| MAERSK | Virginia | Shipping Company | SPAR Publications |
| Malaysia Shipyard & Engineering | Malaysia | Shipyard: New Construction & Repair | Cost Estimating |
| Marine Industries, Ltd | Canada, PQ | Shipyard: New Construction & Repair | SPAR EVM Systems |
| Marinette Marine Corp. | Wisconsin | Shipyard: New Construction & Repair | SPAR EVM Systems |
| Mexican Navy | Mexico | Mexican Navy HQ | Cost Estimating |
| MSCL Inc. | Virginia | Marine Consulting Firm | Cost Estimating |
| NASSCO | California | Shipyard: New Construction & Repair | SPAR EVM Systems |
| National Ship Design & Research Centre | India | Ship Design & Research | SPAR Publications |
| Newport News Shipbuilding | Virginia | Shipyard: New Construction & Repair | R&D, Cost Estimating |
| Norfolk Shipbuilding & Drydock | Virginia | Shipyard: Repair | SPAR EVM Systems |
| Port Weller Drydocks | Canada, Ont. | Shipyard: New Construction & Repair | SPAR EVM Systems |
| P&P Marine Consultants | Greece | Marine Consultants | Cost Estimating |
| RAND Corporation | Virginia | DoD Consulting Firm | Cost Estimating |
| Re-VISION | California | Engineering Consulting | Cost Estimating |
| Saint John Shipbuilding | Canada, NB | Shipyard: New Construction & Repair | SPAR EVM Systems |
| SAIPEM S.p.a. | Croatia | Shipyard: New Construction & Repair | SPAR EVM Systems |
| Science Applications International (SAIC) | Virginia | Naval Design & Engineering Firm | Cost Estimating |
| Signal International, LLC | Texas | Shipyard: New Construction & Repair | Cost Estimating |
| Sun Shipbuilding | Delaware | Shipyard: New Construction & Repair | SPAR EVM Systems |
| TENIX Defence Pty Ltd | Australia | Shipyard: New Construction & Repair | Cost Estimating |
| The Columbia Group | Washington DC | Ship Design & Govt Support Services | Cost Estimating |
| Topaz Ship Building | UAE | Shipyard: New Construction & Repair | SPAR Publications |
| University of Alaska | Alaska | Hydrographic Research | Cost Estimating |
| University of Michigan | Michigan | Academic | Cost Estimating |
| University of New Orleans | Louisiana | Academic | Cost Estimating |
| U.S. Navy, Carderock NSWC | Maryland | Navy R&D | R&D, Cost Estimating |
| U.S. Navy, Charleston Naval Shipyard | South Carolina | Navy Shipyard | SPAR EVM Systems |
| U.S. Navy, Norfolk Naval Shipyard | Virginia | Navy Shipyard | SPAR EVM Systems |
| USCG, Electronics Center | Maryland | USCG Technical Center | Cost Estimating |
| USCG, HQ | Washington, DC | USCG Headquarters | Cost Estimating |
| USCG, Maintenance & Logistics Center | Virginia | USCG Maintenance Center | Cost Estimating |
| US Shipping Partners LP | New Jersey | Ship Owner & Shipping Company | Cost Estimating & Planning |
| Versatile Pacific Shipyards | Canada, BC | Shipyard: New Construction & Repair | SPAR EVM Systems |
| Vigor Shipyards, Inc. | Washington | Shipyard: New Construction & Repair | Cost Estimating |
| Wilson Gillette | Virginia | Marine Consultant | R&D |