Marine propulsion systems manufacturer Schottel introduced its new M-series azimuth thrusters, consisting of several medium-sized rudder propeller sizes covering a power range of 400 to 1,000 kW. The series’ first propulsion units have recently been delivered and will soon be put into operation.
With the M-series, Schottel says it aims to meet new challenges such as shifted engine power classes, updated ice class rules and an ever-increasing number of electric or hybrid-driven vessels. The azimuth thrusters, which combine the latest technologies in mechanical engineering, hydrodynamics and digitalization, are available in three sizes: 210 (640 kW), 240 (850 kW) and 270 (1,000 kW), corresponding to common engine power classes. All sizes are equipped with a powerful planetary steering gear.
The new Schottel M-series features a modular system that allows for multiple configuration options. The thrusters are available in range of various power source options and input directions. The azimuth modules are available for Z-drives, L-drives and ZY-hybrid drives, making them suitable for horizontal electric, vertical electric or combined direct engine plus horizontal electric motor connection. Thus, the M-series thrusters are also compatible with hybrid solutions – such as Schottel SYDRIVE.
Thanks to two basic installation variants, the M-series works with any type of vessel design. Besides the standard installation with variable propeller arm length, a compact minimized variant with shorter propeller arm length is available. These compact installation variants (LC for L-drives, ZC for Z-drives) open up new scope and greater design freedom for ship designers, while leaving more space for other equipment. Both the standard and the compact variant can be bolted, welded or resiliently mounted on vessels.
Two different propulsion modules ensure that the M-series can be used for multiple operation profiles. The Schottel Rudderpropeller (SRP) is universally suitable for all standard applications and vessel designs, achieving high bollard pull and maximum propulsion efficiency for vessels with medium speeds, the manufacturer said. The Schottel EcoPeller (SRE) ensures outstanding propeller performance when it comes to overall efficiency and course stability in more demanding applications and when running at higher service speeds, for example, with ferries, according to Schottel, who adds the SRE reduces both fuel consumption and emissions and thereby leads to lower operating costs.