Sail-drive motors

How to choose this product

A sail-drive motor is a propulsion system whose Z-shaped transmission consists of a series of gears terminating with the propeller.

Applications

As it names indicates, this system is particularly suited to sailboat auxiliary power. It avoids many of the drawbacks inherent in shaft transmission.

Technologies

The sail-drive transmits engine torque to the propeller. The horizontal motor turns a horizontal shaft. Gearing links it to a vertical shaft. Additional gears turn another horizontal shaft connected to the propeller.

This system resembles powerboat Z-drives. However, unlike the latter, the sail-drive propeller cannot pivot for steering purposes. A circular neoprene seal around the sail-drive skeg makes the system watertight. The engine can be a diesel or gasoline engine, an electric motor or even a hybrid system.

How to choose

Engine choice will depend on vessel displacement. A minimum of five horsepower per ton is required for a sailboat. Seven horsepower per ton offers a comfortable margin.

Advantages

- Less vibration than shaft transmission
- More torque
- Horizontal propeller shaft
- No stuffing box
- Integrated seawater intake

Disadvantages

- Seal requires regular replacement
- Mechanically more complex

13 companies | 107 products (boat or nautical equipment)

Companies per page

10 products Yanmar Europe BV
7 products Yanmar
5 products Volvo Penta
Volvo Penta D1-13 (11.8 HP @ 2800 -> 3200 RPM)
Sailboat engine : in-board diesel engine 10 - 20 hp (saildrive, indirect injection, natural aspiration) D1-13 (11.8 HP @ 2800 -> 3200 RPM) Volvo Penta

The Volvo Penta D1 and D2 series are designed with priority for highest comfort onboard. Low cruising...

Volvo Penta D1-20 (18 HP @ 2800 -> 3200 RPM)
Sailboat engine : in-board diesel engine 10 - 20 hp (saildrive, indirect injection, natural aspiration) D1-20 (18 HP @ 2800 -> 3200 RPM) Volvo Penta

The Volvo Penta D1 and D2 series are designed with priority for highest comfort onboard. Low cruising...

Volvo Penta D2-40 (38 HP @ 2800 -> 3200 RPM)
Sailboat engine : in-board diesel engine 30 - 40 hp (saildrive, indirect injection, natural aspiration) D2-40 (38 HP @ 2800 -> 3200 RPM) Volvo Penta

The Volvo Penta D1 and D2 series are designed with priority for highest comfort onboard. Low cruising...

GreenStar Marine GreenStar SD10
Boat engine : electric in-board engine (saildrive) GreenStar SD10 GreenStar Marine

Modern design, lightest weight on the market, easy to install and almost maintenance free! Come and make your own judgment! GreenStar SD10 is comparable to a 10 hp diesel engine. The motor is very compact,...

1 products TEMA
TEMA SPM132 Electric Saildrive
Boat engine : electric in-board engine (saildrive) SPM132 Electric Saildrive TEMA

TEMA SPM132 electric saildrive system is the most strongest and reliable electric propulsion system for boats on the market. This saildrive vas specially designed for TEMA permanent magnet electric motors...

2 products Aquamot
Aquamot SMA110 - 11000W @ 48V
Boat engine : electric in-board engine 10 - 20 kW (saildrive) SMA110 - 11000W @ 48V Aquamot

Type: SMA110 Power consumption: 11000W Rpm: 890 Voltage: 48VDC Current: 240A Efficiency: 88% (incl. gearbox) * Incl. ZF SD10 Saildrive gearbox * With reserve gear unit * Recuperation during sailing...

Aquamot SMA160 - 16000W @ 72V
Boat engine : electric in-board engine 10 - 20 kW (saildrive) SMA160 - 16000W @ 72V Aquamot

Type: SMA160 Power consumption: 16000W Rpm: 950 Voltage: 72VDC Current: 236A Efficiency: 88% (incl. gearbox) * Incl. ZF SD10 Saildrive gearbox * With reserve gear unit * Recuperation during sailing...

Nanni Industries N4.40 (40 HP @ 2800 RPM)
Boat engine : in-board diesel engine 30 - 40 hp (saildrive, indirect injection, natural aspiration) N4.40 (40 HP @ 2800 RPM) Nanni Industries

This Nanni Diesel 4 cylinder marine engine which incorporates the latest Kubota innovations, is particularly well suited for displacement vessels and sailing yachts. Robust Nanni Diesel has forged a strong...

Nanni Industries N2.10 SP60 (10 HP @ 3000 RPM)
Boat engine : in-board diesel engine 10 - 20 hp (saildrive, indirect injection, natural aspiration) N2.10 SP60 (10 HP @ 3000 RPM) Nanni Industries

Kubota engine base Nanni Diesel has forged a strong partnership with Kubota. Kubota engines are known for their robust design, great reliability and excellent longevity. Advanced technologies used by...

Nanni Industries N2.14 SP60 (14 HP @ 3600 RPM)
Boat engine : in-board diesel engine 10 - 20 hp (saildrive, indirect injection, natural aspiration) N2.14 SP60 (14 HP @ 3600 RPM) Nanni Industries

Nanni Diesel has forged a strong partnership with Kubota. Kubota engines are known for their robust design, great reliability and excellent longevity. The N2.14 is equipped with a fast preheating system...

Nanni Industries N3.21 SP60 (21 hp @ 3600 rpm)
Boat engine : in-board diesel engine 20 - 30 hp (saildrive, indirect injection, natural aspiration) N3.21 SP60 (21 hp @ 3600 rpm) Nanni Industries

The latest technologies employed by Kubota resulted in a robust design for the N3.21. The industrial engine base is proven in the most difficult conditions of usage. Reliability and Comfort This engine...

Nanni Industries N3.30 SP60 (29 hp @ 3600 rpm)
Boat engine : in-board diesel engine 20 - 30 hp (saildrive, indirect injection, natural aspiration) N3.30 SP60 (29 hp @ 3600 rpm) Nanni Industries

Experience and know-how Kubota engine know-how combined with the marinizing experience of the Nanni Diesel engineering team has made the N3.30 the preferred choice of the greatest skippers...

Nanni Industries N4.38 SP60 (38 hp @ 3000 rpm)
Boat engine : in-board diesel engine 30 - 40 hp (saildrive, indirect injection, natural aspiration) N4.38 SP60 (38 hp @ 3000 rpm) Nanni Industries

This Nanni Diesel 4 cylinder marine engine which incorporates the latest Kubota innovations, is particularly well suited for displacement vessels and sailing yachts. Robust Nanni...

2 products Sole Diesel
10 products Beta Marine
Beta Marine BETA 14 SD (13.5 HP @ 3600 RPM)
Pleasure boat engine : in-board diesel engine 10 - 20 hp (saildrive, indirect injection, natural aspiration) BETA 14 SD (13.5 HP @ 3600 RPM) Beta Marine

Standard Specifications Beta Marine BZ482SD Saildrive unit - with a 2 cylinder, naturally aspirated, diesel propulsion engine developing 13.5bhp at 3,600 rpm and a swept volume of 479 cc’s. The...

Beta Marine BETA 16 SD (16 HP @ 3600 RPM)
Pleasure boat engine : in-board diesel engine 10 - 20 hp (saildrive, indirect injection, natural aspiration) BETA 16 SD (16 HP @ 3600 RPM) Beta Marine

Standard Specification Beta Marine Beta 16SD Saildrive unit - with a 2 cylinder, naturally aspirated, diesel propulsion engine developing 16bhp at 3,600 rpm and a swept volume of 599 cc’s. The...

Beta Marine BETA 20 SD (20 HP @ 3600 RPM)
Pleasure boat engine : in-board diesel engine 10 - 20 hp (saildrive, indirect injection, natural aspiration) BETA 20 SD (20 HP @ 3600 RPM) Beta Marine

Standard Specification Beta Marine BD 722SD Saildrive unit - with a 3 cylinder, naturally aspirated, diesel propulsion engine developing 20bhp at 3,600 rpm and a swept volume of 719 cc’s. The unit...

Beta Marine BETA 25 SD (25 HP @ 3600 RPM)
Pleasure boat engine : in-board diesel engine 20 - 30 hp (saildrive, indirect injection, natural aspiration) BETA 25 SD (25 HP @ 3600 RPM) Beta Marine

Standard Specification Beta Marine Beta 25SD Saildrive unit - with a 3 cylinder, naturally aspirated, diesel propulsion engine developing 25bhp at 3,600 rpm and a swept volume of 898 cc’s. The...

Beta Marine BETA 30 SD (30 HP @ 3600 RPM)
Pleasure boat engine : in-board diesel engine 20 - 30 hp (saildrive, indirect injection, natural aspiration) BETA 30 SD (30 HP @ 3600 RPM) Beta Marine

Standard Specification Beta Marine - Beta 30 Saildrive - 3 cylinder, naturally aspirated, diesel propulsion engine developing 28bhp at 3,600 rpm and a swept volume of 1001 ccs. The unit is supplied complete...

Beta Marine BETA 35 SD (35 HP @ 3600 RPM)
Pleasure boat engine : in-board diesel engine 30 - 40 hp (saildrive, indirect injection, natural aspiration) BETA 35 SD (35 HP @ 3600 RPM) Beta Marine

Standard Specifications Beta Marine BV1305SD Saildrive unit - with a 4 cylinder, naturally aspirated, diesel propulsion engine developing 35bhp at 3,600 rpm and a swept volume of 1,335 cc’s. The...

Lombardini Marine LDW 502 SD (13 HP @ 3600 RPM)
Pleasure boat engine : in-board diesel engine 10 - 20 hp (saildrive, indirect injection, natural aspiration) LDW 502 SD (13 HP @ 3600 RPM) Lombardini Marine

This series of exceptionally light and compact engines, features very high reliability in every condition; furthermore, this specific project has been carried out in order to optimize durability and low...

Lombardini Marine LDW 702 SD (20 HP @ 3600 RPM)
Pleasure boat engine : in-board diesel engine 10 - 20 hp (saildrive, indirect injection, natural aspiration) LDW 702 SD (20 HP @ 3600 RPM) Lombardini Marine

This series of exceptionally light and compact engines, features very high reliability in every condition; furthermore, this specific project has been carried out in order to optimize durability and low...

Lombardini Marine LDW 1003 SD (30 HP @ 3600 RPM)
Sailboat engine : in-board diesel engine 30 - 40 hp (saildrive, indirect injection, natural aspiration) LDW 1003 SD (30 HP @ 3600 RPM) Lombardini Marine

This series of exceptionally light and compact engines, features very high reliability in every condition; furthermore, this specific project has been carried out in order to optimize durability and low...

Lombardini Marine LDW 1404 SD (40 HP @ 3600 RPM)
Pleasure boat engine : in-board diesel engine 30 - 40 hp (saildrive, indirect injection, natural aspiration) LDW 1404 SD (40 HP @ 3600 RPM) Lombardini Marine

This series of exceptionally light and compact engines, features very high reliability in every condition; furthermore, this specific project has been carried out in order to optimize durability and low...

Lombardini Marine LDW 1904 SD (50 HP @ 3200 RPM)
Pleasure boat engine : in-board diesel engine 40 - 50 hp (saildrive, indirect injection, natural aspiration) LDW 1904 SD (50 HP @ 3200 RPM) Lombardini Marine

This series of exceptionally light and compact engines, features very high reliability in every condition; furthermore, this specific project has been carried out in order to optimize durability and low...

Lombardini Marine LDW 2204 SD (60 HP @ 3600 RPM)
Sailboat engine : in-board diesel engine 50 - 60 hp (saildrive, indirect injection, natural aspiration) LDW 2204 SD (60 HP @ 3600 RPM) Lombardini Marine

This series of exceptionally light and compact engines, features very high reliability in every condition; furthermore, this specific project has been carried out in order to optimize durability and low...

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