A kit for a small boat up to about 28 ft that wants everything in one box. Sleipner SE30 gives more thrust for about the same money.
Amazon $1,345.34 eBayThe Lewmar 110TT Tunnel Thruster Kit is the better bow thruster overall, rated 3.4 to 2.9. The Lewmar 110TT Tunnel Thruster Kit leads on value, efficiency and weight. The Lewmar 110TT Tunnel Thruster Kit costs $273.30 less ($1,345.34 vs $1,618.64).
Prices were last checked November 9, 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. As an eBay Partner, we may be compensated if you make a purchase.
For a runabout or small cruiser up to about 24 ft that can only fit a 110 mm tunnel. Bigger boats need more than 25 kgf.
Fisheries Supply $1,618.64 eBayWhich should you buy?
- Choose the Lewmar 110TT Tunnel Thruster Kit for value ($48.05 per kgf ($1,345.34, 28 kgf) vs $64.75 per kgf ($1,618.64, 25 kgf)), efficiency (18.7 kgf per kW (28 kgf, 1.5 kW) vs 16.7 kgf per kW (25 kgf, 1.5 kW)) and weight (2.8 kgf per kg (28 kgf, 10 kg) vs 2.1 kgf per kg (25 kgf, 12 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 | Lewmar 110TT Tunnel Thruster Kit | Vetus BOW2512E Bow Thruster 25 kgf |
|---|---|---|
| Overall rating | 3.4/5 | 2.9/5 |
| Value 40% | 56 $48.05 per kgf ($1,345.34, 28 kgf) | 36 $64.75 per kgf ($1,618.64, 25 kgf) |
| Efficiency 25% | 67 18.7 kgf per kW (28 kgf, 1.5 kW) | 38 16.7 kgf per kW (25 kgf, 1.5 kW) |
| Run time 25% | 50 run time not published (neutral score used) | 67 4 minutes continuous |
| Weight 10% | 27 2.8 kgf per kg (28 kgf, 10 kg) | 3 2.1 kgf per kg (25 kgf, 12 kg) |
Specifications
| Lewmar 110TT Tunnel Thruster Kit | Vetus BOW2512E Bow Thruster 25 kgf | |
|---|---|---|
| Thrust | ||
| Rated thrust | 28 kgf | 25 kgf |
| Style | Tunnel | Tunnel |
| Propellers | Single | Single |
| Bow or stern use | - | Yes |
| Boat length | Up to 28 ft | up to 24 ft |
| Electrical | ||
| Supply | 12 V | 12 V |
| Motor | 1.5 kW | 1.5 kW |
| Current draw | - | 200 A |
| Continuous run | - | 4 min |
| Build | ||
| Tunnel diameter | 110 mm | 110 mm |
| Weight | 10 kg (22 lb) | 12 kg (26 lb) |
