S100 12V and 24V / 185mm BOW THRUSTER

Operating time
3 minutes continuous operation
Typical Boat Size
11.5 - 16 / 38' - 52' (m / ft)
Output Power
6 kW
Propulsion System
Twin 6-blade composite propellers
Tunnel Diameter
185 / 7.3 (mm / in)
DC system
12V and 24V
Thrust Force at 10.5V and at 21V
100 / 220 (kgf / Lbs)
  • Made of seawater resistant bronze, all shaft and bearing surfaces are CNC machined to 2/1000mm accuracy
  • Its hydrodynamic shape ensures low water resistance and thus less cavitation
  • Heavy-duty seal designed for separation of two media, combining excellent contamination protection and supreme sealing performance
  • Gear-damaging vibrations caused by the action of the twin propellers are minimized due to crucial vibration damping capacity of the seals
  • Easy to replace anti-electrolysis aluminium anode
  • Hardened spiro-conical gears, developed for us by leading German manufacturers. The precise elemental geometry leads to a quieter running of the gear sets and longer lifetime
  • EMS S100 is probably our most versatile bow thruster system. Excellent choice for 12-15m motor yachts and deep footed sailing yachts, whose owners require utmost reliability in virtually all environmental situations, yet appropriate for vessels up to 16m in length
  • Utilizing the same mechanical components as the even more powerful EMS S120, its smaller DC motor ensures better energy efficiency translating into lower amp draws and more compact installation size
  • Our skewback six-blade propellers generate less cavitation, which, in addition to the carefully chosen hydroacoustic design, results in great noise reductions


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Voltage (V)

12 V and 24 V

Thrust (kgf)


Power (kW)


Motor, reversible D.C.


Internal tunnel diameter (mm)


Weight (kg)


Max. operating time (minutes)


Size A in mm, see drawing


Size B in mm, see drawing


Size C in mm, see drawing


Size D min./max. in mm, see drawing


Size E in mm, see drawing


Size F, diameter in mm, see drawing


Size G min. in mm, see drawing


Size H, diameter in mm, see drawing