| Seakeeper vs. Passive/Old Style
| ARG125 | ARG250 | ARG375 | M7000A | M721000 | |
| 2500 | 5000 | 7500 |  Angular Momentum(n-m-s) |
7000 | 21000 |
| 4400 | 3750 | 3250 | Flywheel speed (rpm) |
9700 | 4000 |
| 300 | 700 | 910 | Weight (kg) |
455 | 1320 |
| 570 930 590 |
720 1000 700 |
830 1120 780 |
Length Width Height (mm) |
780 980 680 |
1280 1420 940 |
| 30 | 40 | 45 | Spool-up time (min) |
40 | 45 |
| 3.8 3.4 |
4.8 3.5 |
5.5 4.5 |
Spool-up Power Operating Power (single phase, kW) |
3.0 1.5-2.0 |
3.0 1.0-3.0 |
| Passive | Passive | Passive | Precession Control (Passive/Active) |
Active | Active |
| Air | Air | Air | Cooling Method (Air/Water) |
Water | Water |
| Open-air | Open-air | Open-air | Flywheel & Bearings (Open Air/Vacuum) |
Vacuum | Vacuum |
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