| Manufacturer | Designation | nickname |
|---|---|---|
| Aeromarine | AS | |
| Curtiss | CS | |
| Loening | LS | |
| Martin | MS | |
| Curtiss | S2C | |
| Loening | S2L | |
| Curtiss | SC | Seahawk |
| Martin | SC | Seahawk |
| Dayton-Wright | SDW | |
| Bellanca | SE | |
| Grumman | SF | |
| Great Lakes | SG | |
| Loening | SL | |
| Sikorsky | SS | |
| Vought | SU | |
| Dayton-Wright | WA | |
| Dayton-Wright | WS | |
| Cox-Klemin | XS | |