Power unit

The power unit is the link between your boat's autopilot and the steering system. It is this power unit, also known as the autopilot motor or drive unit, which acts on your steering system. An electric or hydraulic linear actuator is preferred for sailboats, and a hydraulic pump for powerboats with hydraulic steering. Some sailboats, such as the recent Dufour, use rotary engines. Comptoir Nautique offers you its selection of products.

36 products

MK2 drive system Raymarine

Available on 02/11/26

🎃 Halloween

€815.00

€589.92

with the code HALLOWEEN26

-27%

€649.92

-27%

€815.00

-€165.08

Vérin de barre franche ST4000 T Raymarine

Vérin de barre franche ST4000 T Raymarine de dos

Tiller cylinder ST4000 T Raymarine

Last items in stock

🎃 Halloween

€910.00

€654.92

with the code HALLOWEEN26

-28%

€724.92

-28%

€910.00

-€185.08

T1 mechanical linear actuator - 12V Raymarine

🎃 Halloween

€2,095.00

€1,514.92

with the code HALLOWEEN26

-27%

€1,674.92

-27%

€2,095.00

-€420.08

T2 short mechanical linear actuator Raymarine

🎃 Halloween

€2,245.00

€1,621.58

with the code HALLOWEEN26

-27%

€1,791.58

-27%

€2,245.00

View models

-€453.42

T2 mechanical linear actuator Raymarine

Available in 4 to 6 days

🎃 Halloween

€2,295.00

€1,653.25

with the code HALLOWEEN26

-27%

€1,833.25

-27%

€2,295.00

View models

-€461.75

Linear Hydraulic Cylinder 32ST16 Lecomble & schmitt

IN SUPPLIER STOCK

€1,624.92

-20%

€2,034.75

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-€409.83

Linear Hydraulic Cylinder 40ST16 Lecomble & schmitt

Last items in stock

€1,666.58

-20%

€2,089.07

View models

-€422.48

Linear Hydraulic Cylinder 50ST20 Lecomble & schmitt

Last items in stock

€1,708.25

-20%

€2,139.69

View models

-€431.44

Linear hydraulic cylinder 63ST28 Lecomble & schmitt

€3,333.25

-10%

€3,707.00

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-€373.75

Compact Class B Linear Drive - V2 Garmin

In stock within 4 to 6 days

🎃 Halloween

€1,749.17

€1,408.25

with the code HALLOWEEN26

-19%

€1,558.25

-19%

€1,749.17

-€190.92

Class A linear actuator - Type 1 for GHP 12 Garmin

In stock within 4 to 6 days

🎃 Halloween

€1,915.83

€1,546.58

with the code HALLOWEEN26

-19%

€1,716.58

-19%

€1,915.83

-€199.25

Class B linear actuator - Type 2 for GHP 12 Garmin

In stock within 4 to 6 days

🎃 Halloween

€2,190.83

€1,759.92

with the code HALLOWEEN26

-19%

€1,949.92

-19%

€2,190.83

-€240.92

Hydraulic pump Garmin

Last items in stock

🎃 Halloween

€874.17

€713.25

with the code HALLOWEEN26

-18%

€783.25

-18%

€874.17

View models

-€90.92

SmartPump v2 for boats with hydraulic steering Garmin

In stock within 4 to 6 days

🎃 Halloween

€2,415.83

€1,948.25

with the code HALLOWEEN26

-19%

€2,158.25

-19%

€2,415.83

-€257.58

Moteur Rotatif pour autopilotes Raymarine

Moteur Rotatif pour autopilotes Raymarine Type 1 - 12V

Rotary motor for autopilots Raymarine

Available in 4 to 6 days

🎃 Halloween

€2,075.00

€1,498.25

with the code HALLOWEEN26

-27%

€1,658.25

-27%

€2,075.00

View models

-€416.75

Vérin linéaire hydraulique Raymarine Type 2 - 12V

Hydraulic linear cylinders Raymarine

Available in 4 to 6 days

🎃 Halloween

€3,775.00

€2,716.58

with the code HALLOWEEN26

-28%

€3,016.58

-28%

€3,775.00

View models

-€758.42

Pompes Hydrauliques réversibles Raymarine

Pompes Hydrauliques réversibles Raymarine Type 0.5 - 12V

Reversible hydraulic pumps Raymarine

Last items in stock

€649.92

-20%

€815.00

View models

-€165.08

Hydraulic Pump 12/24V 3.0L Simrad

OUT OF STOCK

🎃 Halloween

€1,370.00

€1,104.92

with the code HALLOWEEN26

-19%

€1,224.92

-19%

€1,370.00

View models

-€145.08

Pump-2 12V 0.8L Hydraulic Pump Simrad

IN STOCK

🎃 Halloween

€754.95

€614.92

with the code HALLOWEEN26

-18%

€674.92

-18%

€754.95

-€80.03

Pump-3 12V 1.6L Hydraulic Pump Simrad

Last items in stock

🎃 Halloween

€922.95

€744.92

with the code HALLOWEEN26

-19%

€824.92

-19%

€922.95

-€98.03

Power unit DD15 Simrad

OUT OF STOCK

🎃 Halloween

€2,410.00

€1,941.58

with the code HALLOWEEN26

-19%

€2,151.58

-19%

€2,410.00

-€258.42

SD10 Rotary Cable Unit Simrad

OUT OF STOCK

🎃 Halloween

€1,713.00

€1,376.58

with the code HALLOWEEN26

-19%

€1,526.58

-19%

€1,713.00

-€186.42

RF45X bar angle sensor Simrad

OUT OF STOCK

🎃 Halloween

€673.00

€544.08

with the code HALLOWEEN26

-19%

€604.08

-19%

€673.00

-€68.92

Rotating unit for cable steering Simrad

OUT OF STOCK

🎃 Halloween

€1,233.00

€994.92

with the code HALLOWEEN26

-19%

€1,104.92

-19%

€1,233.00

-€128.08

HELM-1 power unit Lowrance / Simrad

Last items in stock

🎃 Halloween

€1,209.00

€983.25

with the code HALLOWEEN26

-18%

€1,083.25

-18%

€1,209.00

-€125.75

Adjustable-flow hydraulic pumps Lecomble & schmitt

IN SUPPLIER STOCK

€633.25

-20%

€799.96

View models

-€166.71

Which power unit for which helm system?

If your helm system is hydraulic, it is advisable to refer to your helm system documentation to determine the capacity of the hydraulic steering cylinder fitted to the boat.

Motorboats with older Z-Drive bases, such as Four Winns or Ombrine, are generally fitted with cable steering with hydraulic assistance. For these boats, a universal Z-Drive kit should be installed.

Sailboats with mechanical steering systems can use one of two types of cylinder, depending on the space available and the possibility of installation:

Hydraulic linear actuator: This self-contained unit consists of a hydraulic actuator, a reversible pump and a reservoir. The hydraulic linear power unit is attached directly to the rudder quadrant or, if no rudder tube anchorage is available, by adding a wicker arm. Advantages: no wear as the hydraulic circuit is closed + very low tiller friction.
Electric linear actuator: Installation is similar to that of a hydraulic actuator, with the difference that this model takes up less space due to its monobloc construction. Strengths: powerful thrust + silent operation.

Which model of jack or pump should you choose, and which equipment for your boat's autopilot?

Hydraulic cylinder, tiller cylinder, linear cylinder, hydraulic pump, rotary motor... install everything you need to get the most out of your autopilot.

Lecomble & Schmit's 40ST16 Newave hydraulic linear actuator features an adjustable rod and integrated electric bypass. Easy to install, it's simple to install directly on the bar sector. The Raymarine electric mechanical actuator is designed for ST4000 / SPX-5 / EV100 Tiller pilots. Particularly robust, it is perfect for tiller sailboats. The Garmin hydraulic pump steers the boat in conjunction with the hydraulic steering system and according to the instructions transmitted via the pilot controller. Adapted to mechanical systems, theDD15 power unit from Simrad is particularly compact and powerful. The motor can be installed on boats from 30 to 40 feet. The universal Z Drive kit can be fitted to boats equipped with a sterndrive motor with power steering. The tiller is operated like a steering cable!

Choose the power unit best suited to your helm system and take advantage of the autopilot mode.

operation hydraulic cylinder automatic pilot pump