The SW17 Thruster CW is lighter in air (1350 g against 1630 g). The DW20 Thruster CW puts out more thrust (≥20 kgf against ≥17 kgf), and is rated deeper (0–350 m against 0–30 m).
The SW17 Thruster CW is US$526 and the DW20 Thruster CW is US$593. That is US$30.94 per kgf of thrust for the SW17 Thruster CW and US$29.65 per kgf of thrust for the DW20 Thruster CW.
| SW17 Thruster CW | DW20 Thruster CW | |
|---|---|---|
| Maximum Bollard Thrust (kgf) | ≥17 | ≥20 |
| Rated Power (W) | 870 | 910 |
| Rated Voltage (V) | 48 | 48 |
| Applicable Water Depth | 0–30 m | 0–350 m |
| Propeller Diameter | Ø106 mm | Ø126 mm |
| Weight in Air (g) | 1350 | 1630 |
| Weight in Water (g) | 775 | 950 |
| Nozzle Material | POM | POM |
| Shell Material | Aluminium alloy | Aluminium alloy |
| Propeller Material | Aluminium alloy | Aluminium alloy |
| Main Shaft Sealing | Low-resistance dynamic seal | Low-resistance dynamic seal |
| Main Body Structure | Two-stage sealing chamber | Two-stage sealing chamber |
| Cable | TPU (glossy) Ø8.5 mm, 3×14 AWG, 1.5 m | TPU (matte) Ø9 mm, 3×13 AWG, 1.5 m |
| Driver | External ESC (TW-40A-12S or TW-80A-12S) | External ESC (TW-40A-12S or TW-80A-12S) |
| Operating Temperature | 0–40 °C (storage 0–50 °C) | 0–40 °C (storage 0–50 °C) |
Rows the two disagree on are marked; the figures are CubeMars'. To put any other two parts side by side, build your own comparison.