Sleipner SE30 Tunnel Thruster 12V
#2 in Under 45 kgfFull review
The cheapest way into a Sleipner tunnel thruster, for a small cruiser or runabout. Pick the SE40 if your boat is near the top of its length range.
Amazon $1,341$1,341
The Sleipner SE30 Tunnel Thruster 12V is the better bow thruster overall, rated 3.5 to 2.8. The Sleipner SE30 Tunnel Thruster 12V leads on value and weight. The Sleipner SE30 Tunnel Thruster 12V costs $2,825.15 less ($1,341 vs $4,166.15).
Prices were last checked November 4, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Quick BTQ 140-30 Bow Thruster
#7 in Under 45 kgfFull review
A small Italian thruster for a boat of about 7 to 9 m. At the only Amazon price found it is poor value next to a Sleipner SE30.
Amazon $4,166.15$4,166.15
Which should you buy?
- Choose the Sleipner SE30 Tunnel Thruster 12V for value ($44.70 per kgf ($1,341, 30 kgf) vs $138.87 per kgf ($4,166.15, 30 kgf)) and weight (3.2 kgf per kg (30 kgf, 9.5 kg) vs 2.5 kgf per kg (30 kgf, 11.8 kg)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 45 kgf bow thruster; a clear win is highlighted. How we rank explains each one.
| Factor weight | Sleipner SE30 Tunnel Thruster 12V | Quick BTQ 140-30 Bow Thruster |
|---|---|---|
| Overall rating | 3.5/5 | 2.8/5 |
| Value 40% | 61 $44.70 per kgf ($1,341, 30 kgf) | 0 $138.87 per kgf ($4,166.15, 30 kgf) |
| Efficiency 25% | 86 20 kgf per kW (30 kgf, 1.5 kW) | 86 20 kgf per kW (30 kgf, 1.5 kW) |
| Run time 25% | 33 3 minutes continuous | 50 run time not published (neutral score used) |
| Weight 10% | 39 3.2 kgf per kg (30 kgf, 9.5 kg) | 18 2.5 kgf per kg (30 kgf, 11.8 kg) |
Specifications
| Sleipner SE30 Tunnel Thruster 12V | Quick BTQ 140-30 Bow Thruster | |
|---|---|---|
| Thrust | ||
| Rated thrust | 30 kgf | 30 kgf |
| Thrust at full supply voltage | 40 kgf | - |
| Style | Tunnel | Tunnel |
| Propellers | Single | Single |
| Bow or stern use | Yes | - |
| Boat length | 20-26 ft | 23-29 ft |
| Electrical | ||
| Supply | 12 V | 12 V |
| Motor | 1.5 kW | 1.5 kW |
| Current draw | 245 A | - |
| Continuous run | 3 min | - |
| Build | ||
| Tunnel diameter | 125 mm | 140 mm |
| Weight | 9.5 kg (20.9 lb) | 11.8 kg |