A total of 1,251 marine tractors (MTs) and marine tow launches (MTLs) were built for the U.S. Army by 41 boatbuilders. All were of wood. Most of the MTs were either 26 feet or 36 feet in length, while the MTLs were 46 feet.
| Shipbuilder | Location | Type | # | Design # | Length (ft.) | Delivery | Disposition |
| Hinckley & Co. | Southwest Harbor ME | MT | 1-30 | 207-A | 26 | 3/42-5/42 | |
| Dodge Boat & Plane | Newport News VA | MT | 31-55 | 207-A | 26 | 4/42-6/42 | |
| Hinckley & Co. | Southwest Harbor ME | MT | 56-96 | 207-A | 26 | 9/42-2/43 | |
| Hinckley & Co. | Southwest Harbor ME | MT | 97-106 | 207-A | 26 | 8/42-12/42 | |
| Hinckley & Co. | Southwest Harbor ME | MT | 107-136 | 207-A | 26 | 2/43-4/43 | |
| Richardson Boat | Tonawanda NY | MT | 137-177 | 207-A | 26 | 1/43-4/43 | |
| 178-193 | Cancelled | ||||||
| Motor Boat Marina | Seattle WA | MT | 194-203 | 207-A | 26 | 2/43 | |
| Northeast Shipbuilding | Quincy MA | MTL | 204-208 | 324 | 46 | 4/43-5/43 | |
| John & Associates | Rye NY | MTL | 209-213 | 324 | 46 | 3/43-6/43 | |
| Hinckley & Co. | Southwest Harbor ME | MT | 214-215 | 207-A | 26 | 4/43 | |
| Muzzio Bros. | Stamford CT | MTL | 216-225 | 324 | 46 | 4/43-5/43 | |
| Stowman Shipyard | Dorchester NJ | MTL | 226-230 | 324 | 46 | 3/43-4/43 | |
| Johnson Bros. | Point Pleasant NJ | MTL | 231-235 | 324 | 46 | 3/43-5/43 | |
| Hinckley & Co. | Southwest Harbor ME | MTL | 236-241 | 324 | 46 | 4/43-6/43 | |
| Moyer & Son | Ocean City NJ | MTL | 242-246 | 324 | 46 | 3/43-4/43 | |
| Johnson, Morton | Bay Head NJ | MTL | 247-251 | 324 | 46 | 3/43-5/43 | |
| Kretzer Boat Works | City Island NY | MTL | 252-255 | 324 | 46 | 4/43-7/43 | |
| Cape Cod Shipbuilding | Wareham MA | MTL | 256-260 | 324 | 46 | 4/43-5/43 | |
| Graves, J. E. | Marblehead MA | MTL | 261-265 | 324 | 46 | 4/43-5/43 | |
| Dawn Cruisers | Classon Point NY | MTL | 266-270 | 324 | 46 | 4/43-5/43 | |
| John & Associates | Rye NY | MTL | 271-275 | 324 | 46 | 3/43-6/43 | |
| Grandy Boat | N. Seattle WA | MT | 276-285 | 329 | 36 | 5/43-7/43 | |
| 286-288 | |||||||
| Adams Boat Works | Seattle WA | MT | 289-291 | 329 | 36 | 7/43 | |
| Hinckley & Co. | Southwest Harbor ME | MT | 292-311 | 207-A | 26 | 4/43 | |
| Gray's Harbor Shipbuilding | Aberdeen WA | MT | 312-321 | 329 | 36 | 4/43-5/43 | |
| Jensen & Sons | Friday Harbor WA | MT | 322-324 | 329 | 36 | 5/43-7/43 | |
| Jensen Motor Boat | Seattle WA | MT | 325-334 | 329 | 36 | 6/43-9/43 | |
| Grandy Boat | N. Seattle WA | MT | 335-344 | 329 | 36 | 5/43-7/43 | |
| Hinckley & Co. | Southwest Harbor ME | MT | 345-382 | 207-A | 26 | 4/43-7/43 | |
| Hunt Marine Service | Richmond CA | MT | 383-389 | 329 | 36 | 6/43-9/43 | |
| Graves, J. E. | Marblehead MA | MTL | 390-397 | 324-A | 47 | 9/43-12/43 | |
| Graves, J. E. |