Lewmar 185TT 6.0 kW Gen 2 Thruster
#11 in Over 75 kgfFull review
The strongest 12 V Lewmar for a 185 mm tunnel. A 24 V boat is better served by a 24 V thruster that draws half the current.
Fisheries Supply $4,595.44 eBay$4,595.44
The Lewmar 185TT 6.0 kW Gen 2 Thruster is the better bow thruster overall, rated 3.0 to 2.9. The Lewmar 185TT 6.0 kW Gen 2 Thruster leads on weight. The Lewmar 185TT 6.0 kW Gen 2 Thruster costs $227.10 less ($4,595.44 vs $4,822.54).
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.
Sleipner SE100 Tunnel Thruster 12V
#12 in Over 75 kgfFull review
For a 39 to 56 ft boat that has only a 185 mm tunnel and a 12 V system. A 24 V boat gets more thrust per dollar from the SE120.
Fisheries Supply $4,822.54 eBay$4,822.54
Which should you buy?
- Choose the Lewmar 185TT 6.0 kW Gen 2 Thruster for weight (3.6 kgf per kg (97 kgf, 27 kg) vs 3.2 kgf per kg (100 kgf, 31 kg)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 75 kgf bow thruster; a clear win is highlighted. How we rank explains each one.
| Factor weight | Lewmar 185TT 6.0 kW Gen 2 Thruster | Sleipner SE100 Tunnel Thruster 12V |
|---|---|---|
| Overall rating | 3.0/5 | 2.9/5 |
| Value 40% | 57 $47.38 per kgf ($4,595.44, 97 kgf) | 56 $48.23 per kgf ($4,822.54, 100 kgf) |
| Efficiency 25% | 31 16.2 kgf per kW (97 kgf, 6 kW) | 27 15.9 kgf per kW (100 kgf, 6.3 kW) |
| Run time 25% | 33 3 minutes continuous | 33 3 minutes continuous |
| Weight 10% | 53 3.6 kgf per kg (97 kgf, 27 kg) | 41 3.2 kgf per kg (100 kgf, 31 kg) |
Specifications
| Lewmar 185TT 6.0 kW Gen 2 Thruster | Sleipner SE100 Tunnel Thruster 12V | |
|---|---|---|
| Thrust | ||
| Rated thrust | 97 kgf | 100 kgf |
| Thrust at full supply voltage | - | 116 kgf |
| Style | Tunnel | Tunnel |
| Propellers | Single | Twin |
| Bow or stern use | - | Yes |
| Boat length | - | 39-56 ft |
| Electrical | ||
| Supply | 12 V | 12 V |
| Motor | 6 kW | 6.3 kW |
| Current draw | 700 A | 740 A |
| Continuous run | 3 min | 3 min |
| Build | ||
| Tunnel diameter | 185 mm | 185 mm |
| Weight | 27 kg (59 lb) | 31 kg (68.3 lb) |