Sleipner SE60 Tunnel Thruster 12V
#4 in 45 to 75 kgfFull review
The best value in the range for a 30 to 39 ft boat, with enough thrust for a heavy cruiser in moderate wind.
Amazon $1,900$1,900
The Sleipner SE60 Tunnel Thruster 12V is the better bow thruster overall, rated 3.9 to 3.0. The Sleipner SE60 Tunnel Thruster 12V leads on efficiency, value and weight. The Sleipner SE60 Tunnel Thruster 12V costs $1,199.99 less ($1,900 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 Sleipner SE60 Tunnel Thruster 12V for efficiency (19.4 kgf per kW (60 kgf, 3.1 kW) vs 16.2 kgf per kW (65 kgf, 4 kW)), value ($31.67 per kgf ($1,900, 60 kgf) vs $47.69 per kgf ($3,099.99, 65 kgf)) and weight (4 kgf per kg (60 kgf, 15 kg) vs 3.2 kgf per kg (65 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 | Sleipner SE60 Tunnel Thruster 12V | Lewmar 185TT 4.0 kW Gen 2 Thruster |
|---|---|---|
| Overall rating | 3.9/5 | 3.0/5 |
| Value 40% | 84 $31.67 per kgf ($1,900, 60 kgf) | 56 $47.69 per kgf ($3,099.99, 65 kgf) |
| Efficiency 25% | 76 19.4 kgf per kW (60 kgf, 3.1 kW) | 32 16.2 kgf per kW (65 kgf, 4 kW) |
| Run time 25% | 33 3 minutes continuous | 33 3 minutes continuous |
| Weight 10% | 67 4 kgf per kg (60 kgf, 15 kg) | 42 3.2 kgf per kg (65 kgf, 20 kg) |
Specifications
| Sleipner SE60 Tunnel Thruster 12V | Lewmar 185TT 4.0 kW Gen 2 Thruster | |
|---|---|---|
| Thrust | ||
| Rated thrust | 60 kgf | 65 kgf |
| Thrust at full supply voltage | 73 kgf | - |
| Style | Tunnel | Tunnel |
| Propellers | Single | Single |
| Bow or stern use | Yes | - |
| Boat length | 30-39 ft | - |
| Electrical | ||
| Supply | 12 V | 12 V |
| Motor | 3.1 kW | 4 kW |
| Current draw | 370 A | - |
| Continuous run | 3 min | 3 min |
| Build | ||
| Tunnel diameter | 185 mm | 185 mm |
| Weight | 15 kg (33.1 lb) | 20 kg (43 lb) |