USA - Naval aviation and armament
Vought O3U observation seaplane

O3U-1
| Modification | Purpose | Deliveries | Number of commissioned | Discarding | Differences from the previous modification |
| O3U-1 | observer | 7/1930 - 7/1935 | 87, partly wheeled | 3/1942 | Pratt & Whitney R-1340-C engine (425 h. p.) |
| O3U-3 | 76, partly wheeled | R-1340-12 engine (550 hp) | |||
| O3U-6 | 32, partly wheeled | R-1340-12 (16 planes) or R-1340-18 (16 planes) |
| Modification |
O3U-6 |
|
Wing span, m |
10.97 |
|
Length, m |
8.37 |
|
Height, m |
3.45 |
|
Wings area, m2 |
31.31 |
|
Empty mass, kg |
1502 |
|
Full flying-off mass, kg |
2161 |
| Engine | 1 Pratt & Whitney R-1340-12 |
|
Power, h. p. |
550 |
| Maximal speed, km/h | 269 |
| Cruise speed, km/h | |
| Flying range, km | 1094 |
| Vertical speed, m/s | |
| Maximal altitude, m | 5670 |
| Complement | 2 |
| Armament | 3 x 7.62 MG |

O3U-3
© Ivan Gogin, 2008