| Advanced Boiler Control Services | Industrial Boiler Control |
| AESSEAL, Inc. | Manufacturing |
| Ahold Delhaize | Grocery / Retail |
| Ameresco | Power |
| American Bureau Of Shipping | American Bureau Of Shipping |
| American Cruise Lines | Hospitality |
| American Maritime Officers | Maritime |
| American Plant Maintenance | Energy Efficiency |
| Arctic Storm Management Group, LLC | Commercial Fishing |
| Boothbay Sea and Science Center | Youth Sea and Science Program |
| Burlington Electric Department | Public Utility |
| Canaveral Port Authority | Major Seaport in Florida. |
| Cianbro | Construction |
| Coastal Transportation, Inc. | Alaskan Freight |
| Compounding Solutions, LLC | Manufacturing |
| Crowley Maritime | transportation and logistics |
| Dann Marine Towing, LC. | Marine Towing |
| Dunlap Towing Company | Marine Transportation |
| Eagle Creek Renewable Energy | Hydro Electric |
| East Coast Seafood Group | Seafood/Perishables Logistics |
| Evergreen Packaging | Pulp, Paper, Board and Equipment |
| Eversource Energy | Energy |
| FieldCore | Energy / Utilities / Power |
| Flagship Management | Maritime |
| FW Webb | Wholesale |
| G&H Towing Company | Maritime |
| GD NASSCO | Shipbuilding |
| General Dynamics Bath Iron Works | Ship Building |
| General Dynamics Electric Boat | Defense / Aerospace |
| Glacier Fish Company | Commercial Fishing |
| Granite Shore Power | Utilities |
| Great Lakes Dredge & Dock Company, LLC | Trailing Scution Hopper Dredges |
| Harley Marine Services | Transportation |
| Hartford Steam Boiler | Insurance |
| HDR Engineering | Engineering |
| Hurricane Island Outward Bound School | Outdoor Education |
| Inland Rivers, Ports & Terminals | Inland Rivers, Ports,Terminals, Waterways |
| ISO New England | Utilities |
| Keystone Shipping Co. | Maritime |
| Kiewit | Construction and Engineering |
| Lindblad Expeditions | Travel / tourism |
| M.E.B.A. DISTRICT ONE | Marine Engineering |
| Maine Department of Environmental Protection | State Government |
| Maine Department of Transportation | Transportation |
| Massachusetts Bay Lines | passenger vessel |
| Masters, Mates and Pilots | Maritime Labor Union |
| McAllister Towing | Maritime |
| Meggitt Sensing Systems | Energy / Oil & Gas |
| Metro Ports | Transportation |
| Military Sealift Command | Maritime Transportation |
| MMA Continuing Education Department | Mariner Training |
| MMA Graduate School | International Business & Logistics |
| National Geospatial-Intelligence Agency | Government |
| NAVSEA- Naval Surface Warfare Center- Port Hueneme | Government DOD |
| ND Paper - Rumford Division | Paper Manufacturing |
| New England Controls | Industrial Automation |
| NOAA Commissioned Corps | Government / Military / Science |
| NOAA Marine Operations | Research Vessels |
| Noble Supply & Logistics | Global Logistics & Supply |
| Northern Light Health (formerly EMHS) | Healthcare |
| O'Hara Corporation | Commercial Fishing |
| ORBIS, Inc | Defense/Engineering |
| Passenger Vessel Operation | Passenger Vessel Operation |
| PepsiCo | Consumer Products / Food / Beverage |
| Portsmouth Naval Shipyard | Shipyard |
| Rand Logistics / Grand River Navigation | Maritime Transportaion - Great Lakes |
| ReEnergy Holdings LLC | Biomass Plant |
| Sappi North America, Inc. | Pulp & Paper |
| Schuyler Line Navigation Company | Maritime |
| Sea Education Association | Sail Training and marine science |
| Seaward Services Inc. | Maritime Industry |
| Shaver Transportation | Marine Transportation |
| Steamship Authority | Transportation |
| Strategic Maintenance Solutions | Consulting / Engineering /Technology |
| TE SubCom | Maritime cable operations |
| The Babcock & Wilcox Company | Power / Engineering |
| The Jackson Laboratory | Research |
| TRC Companies Inc. | Engineering and Construction Consulting |
| Trident Seafoods | Fishing Industry |
| UnCruise Adventures | Cruise Industry |
| United States Coast Guard | Military |
| University Credit Union | Banking |
| University of California, San Diego - Scripps Institution of Oceanography | Education and Research |
| US Army Bangor Recruiting Station | Military |
| Vane Line Bunkering | Inland & Near Coastal Towing |
| Verso Corporation | Printing and Speciality Papers |
| Veson Nautical | Commercial Maritime Software |
| Washington State Ferries-Washington State Dept. of Transportation | Marine Transportation |
| Weeks Marine, Inc. | Marine Construction |
| Wheelabrator Technologies | Wheelabrator Technologies |
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