| SPL | |
|---|---|
| |
| Role | Submarine Borne Folding Flying Boat |
| National origin | USSR |
| Manufacturer | Chyetverikov |
| Designer | Igor Vyacheslavovich Chyetverikov |
| First flight | July 1934 |
| Number built | 2 |
The SPL (Samolyet dlya Podvodnikh Lodok – aeroplane for submarine boats) (a.k.a. OSGA-101, and Gidro-1) was a submarine borne flying boat designed and built in the USSR from 1931.