| STO Class Sub | Launched | LOA (ft) | Beam (ft) | Std. Disp. (tons) | Full Load Disp. (tons) | Shafts | Armor | Speed kts | Guns |
| I400 | 1944 | 400.25 | 39.33 | 3530 | 6560 | 2 | . | 18.7 | (8) TT, (1) 5.5 inch, 3 Aircraft |
| I401 | 1944 | (400'-3") | (39'-4") | ||||||
| I402 | 1944 | LOA (inches) | Beam (inches) | Std. Disp. (lbs) | Full Load (lbs) | Pump | Armor | Speed 100' | Guns |
| I403 | 1944 | 50.03 | 4.92 | 8.9 | 16.6 | 3/4 | 1/32" | 60.9 | (8) TT, (1) BB, 3 Aircraft |
| I404 | 1944 | ||||||||
| I405 | 1944 |