High hydrodynamic efficiency provided by the propeller- nozzle combination together with the optimized shape of the thruster housing and nozzle connections.
Choice of two nozzle types:
- Bollard pull nozzle: optimized for bollard pull, with outstanding performance at zero knots vessel speed.
- Free sailing nozzle: shorter and lighter, designed for free sailing efficiency at 10-12 knots, whilst keeping good bollard pull capabilities at low vessel speeds.
High speed engine compatible:
WST thrusters are compatible with high speed engines, as well as with Wärtsilä’s own medium speed engines. All common input speeds between 750 and 1800 rpm can be accommodated.
Robust & Reliable:
The thrusters are reliable and fitted with robust gears, bearings, other drive line components and steering system. The WST series comes with an advanced sealing system that includes the option for seal monitoring or the use of environmentally acceptable lubricants (EAL). The WST series design is prepared to meet the US EPA’s VGP 2013 regulatory requirements.
Installation flexibility: WST thrusters can be installed and mounted in various ways. These include bolt-in and weld-in possibilities with easy to install hull fairing. Mounting from above (can mounted), below, or split mounting allows the yard to optimize the building scheme.
Compact & integrated: By integrating all the auxiliary equipment needed to operate the thruster onto the top plate around the upper gearbox of the Z-drive system, a truly compact solution is achieved and less thruster room space is needed.
User friendly controls:
The thruster and its auxiliary systems are controlled by the Wärtsilä Propulsion Control system. The Protouch panel is space saving and designed to allow easier and more intuitive operation of the thruster functions.
The thrusters are available with Finnish- Swedish Baltic Ice Class, Russian Ice class (RMRS), or Russian river ice class (RRR).
The WST thrusters have been developed to be maintenance friendly. By utilising the Wärtsilä PCMS (Propulsion Condition Monitoring Service), downtime and maintenance costs can be minimized.