USA - Naval aviation and armament
Boeing F4B fighter

F4B-4
| Modification | Purpose | Deliveries | Number of commissioned | Discarding | Differences from the previous modification |
| F4B-1 | fighter | 8/1929 - 1/1933 | 27 | late 1937 | Pratt & Whitney R-1340-17 engine (525 h. p.) |
| F4B-2 | 46 | minor alterations | |||
| F4B-3 | 21 | metal construction | |||
| F4B-4 | 74 | R-1340-16 engine (550 h. p.), lifeboat |
| Modification |
F4B-4 |
|
Wing span, m |
9.14 |
|
Length, m |
6.12 |
|
Height, m |
2.84 |
|
Wings area, m2 |
21.13 |
|
Empty mass, kg |
1068 |
|
Full flying-off mass, kg |
1638 |
| Engine | 1 Pratt & Whitney R-1340-16 |
| Power, h. p. | 550 |
| Maximal speed, km/h | 303 |
| Cruise speed, km/h | 254 |
| Flying range, km | 600 |
| Vertical speed, m/s | 8.7 |
| Maximal altitude, m | 8200 |
| Complement | 1 |
| Armament | 2 õ 7.6 Browning MG, 120 kg of bombs |

F4B-2

F4B-4
© Ivan Gogin, 2008