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
3.4/5
The current Lewmar for a mid-size boat. Fine if you already have Lewmar controls; otherwise Sleipner is cheaper for the thrust.
- 42 kgfThrust
- 2.2 kWMotor
- 12 VSupply
- 140 mmTunnel
Check price at Amazon$1,839.37
Price checked November 4, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 42 kgf in a 140 mm tunnel
- Control panel powers down after 3 minutes of continuous use to protect the motor
- Gen 2 electronics with thermal cut-out
Cons
- Costs more than a Sleipner SE40 for about the same thrust
- Lewmar publishes no boat length range for it
- Control panel not included
The Lewmar TT Gen 2 family
Every Lewmar TT Gen 2 model we rank, smallest first. Ratings compare each against its own thrust.
| Model | Thrust | Rating | Price |
|---|---|---|---|
| Lewmar 140TT 2.2 kW Gen 2 Thruster (this one) | 42 kgf | 3.4/5 | $1,839.37 |
| Lewmar 185TT 3.0 kW Gen 2 Thruster | 58 kgf | 3.6/5 | $2,197.12 |
| Lewmar 185TT 4.0 kW Gen 2 Thruster | 65 kgf | 3.0/5 | $3,099.99 |
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its thrust. How we rank explains each one.
Specifications
| Model number | 140TT2.2 |
|---|---|
| Thrust | |
| Rated thrust | 42 kgf |
| Style | Tunnel |
| Propellers | Single |
| Electrical | |
| Supply | 12 V |
| Motor | 2.2 kW |
| Continuous run | 3 min |
| Build | |
| Tunnel diameter | 140 mm |
| Weight | 13 kg (29 lb) |
Alternatives in this thrust
Lewmar 140TT 2.0 kW Tunnel Thruster
#3 in Under 45 kgfFull review
The older Lewmar 140TT. Buy it only to replace an existing unit; the Gen 2 2.2 kW version gives 5 kgf more for about $225 more.
Amazon $1,613.74$1,613.74
Lewmar 110TT Tunnel Thruster Kit
#5 in Under 45 kgfFull review
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 $1,342.88$1,342.88
Compare
Compare the Lewmar 140TT 2.2 kW Gen 2 Thruster with any other bow thruster →
More from Lewmar: every Lewmar product ranked.