Presentation of the shaft line
The shaft line is one of the traditional transmissions for sailboats. It consists of an output shaft, which runs from the rear of the engine through the hull and connects the propeller installed under the hull. It is a stuffing box or a system of rotating joints which ensures the watertightness at the level of the hull.
This propulsion system is particularly suitable for sailboats that make long voyages, because in the event of technical problems, the shaft line remains easy to tinker with, wherever you are, even at sea.
The shaft line allows very large powers to be transmitted to the propeller (there is no limit, the diameter of the shaft is simply increased to adapt it to the power). This is why it is used on large yachts with very powerful engines.
Discover the shaft line for motor boats
Advantages
- Maintenance
- Easy to tinker with in any situation
- Installation and maintenance costs
- Simplicity of use
- Easy installation
Disadvantages
- Manoeuvrability of the boat
- Sealing (stuffing box requires follow-up)
- The alignment between shaft and motor must be checked regularly
