| Grom Class Destroyers | Launched | LOA (ft) | Beam (ft) | Std. Disp. (tons) | Full Load Disp. (tons) | Shafts | Armor | Speed kts | Guns |
| Blyskawica | 1936 | 374 | 36.1 | 2011 | 3383 | 2 | . | 39 | (7) 120 mm (1x1, 3x2), 6 TT, 44 Mines |
| Grom | 1936 | (36'-1") | |||||||
| LOA (inches) | Beam (inches) | Std. Disp. (lbs) | Full Load (lbs) | Pump | Armor | Speed 100' | Guns | ||
| 46.75 | 4.51 | 5.1 | 8.6 | 1/2 | 1/32" | 29.2 | (7) BB, 6 TT, 44 Mines |