Lewmar 185TT 3.0 kW Gen 2 Thruster
#5 in 45 to 75 kgfFull review
Lewmar’s mid-large thruster. It matches a Sleipner SE60 on thrust but costs about $300 more.
Amazon $2,197.12$2,197.12
The Lewmar 185TT 3.0 kW Gen 2 Thruster is the better bow thruster overall, rated 3.6 to 3.0. The Lewmar 185TT 3.0 kW Gen 2 Thruster leads on efficiency and value. The Lewmar 185TT 4.0 kW Gen 2 Thruster wins on weight. The Lewmar 185TT 3.0 kW Gen 2 Thruster costs $902.87 less ($2,197.12 vs $3,099.99).
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.
Lewmar 185TT 4.0 kW Gen 2 Thruster
#8 in 45 to 75 kgfFull review
The strongest 12 V Lewmar in this list. It costs about $48 per kgf; a Vetus BOW7512D gives more thrust for about $1,000 less.
Amazon $3,099.99$3,099.99
Which should you buy?
- Choose the Lewmar 185TT 3.0 kW Gen 2 Thruster for efficiency (19.3 kgf per kW (58 kgf, 3 kW) vs 16.2 kgf per kW (65 kgf, 4 kW)) and value ($37.88 per kgf ($2,197.12, 58 kgf) vs $47.69 per kgf ($3,099.99, 65 kgf)).
- Choose the Lewmar 185TT 4.0 kW Gen 2 Thruster for weight (3.2 kgf per kg (65 kgf, 20 kg) vs 2.9 kgf per kg (58 kgf, 20 kg)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 45 to 75 kgf bow thruster; a clear win is highlighted. How we rank explains each one.
| Factor weight | Lewmar 185TT 3.0 kW Gen 2 Thruster | Lewmar 185TT 4.0 kW Gen 2 Thruster |
|---|---|---|
| Overall rating | 3.6/5 | 3.0/5 |
| Value 40% | 72 $37.88 per kgf ($2,197.12, 58 kgf) | 56 $47.69 per kgf ($3,099.99, 65 kgf) |
| Efficiency 25% | 76 19.3 kgf per kW (58 kgf, 3 kW) | 32 16.2 kgf per kW (65 kgf, 4 kW) |
| Run time 25% | 33 3 minutes continuous | 33 3 minutes continuous |
| Weight 10% | 30 2.9 kgf per kg (58 kgf, 20 kg) | 42 3.2 kgf per kg (65 kgf, 20 kg) |
Specifications
| Lewmar 185TT 3.0 kW Gen 2 Thruster | Lewmar 185TT 4.0 kW Gen 2 Thruster | |
|---|---|---|
| Thrust | ||
| Rated thrust | 58 kgf | 65 kgf |
| Style | Tunnel | Tunnel |
| Propellers | Single | Single |
| Electrical | ||
| Supply | 12 V | 12 V |
| Motor | 3 kW | 4 kW |
| Continuous run | 3 min | 3 min |
| Build | ||
| Tunnel diameter | 185 mm | 185 mm |
| Weight | 20 kg (43 lb) | 20 kg (43 lb) |