CPP TANDEM

– Advanced Propulsion System with Enhanced Efficiency

Technology and Technical Specifications

 

The CPP Tandem is an advanced bow thruster featuring a Controllable Pitch Propeller system, ensuring high propulsion efficiency while minimizing underwater noise. By utilizing two counter-rotating controllable pitch propellers, it delivers increased thrust force, reduced cavitation, and superior energy efficiency compared to conventional single-propeller bow thrusters.

Technical Specifications

 

  • Propeller Type: CPP (Controllable Pitch Propeller)
  • Propeller Diameter: 1200 mm
  • Input Power: 600 – 800 kW
  • Motor Speed: 1200 rpm
  • Duty Cycle: Auxiliary / S2-30

Key Advantages of CPP Tandem

 

Increased Thrust Force

The CPP Tandem generates 5% more thrust than hydrodynamically optimized single-propeller bow thrusters, significantly improving efficiency.

 

Lower Noise Emissions

Analysis and model tests have shown that at 600 kW power output and under identical immersion conditions, the CPP Tandem system reduces underwater noise emissions by up to 4.3 dB compared to single-propeller thrusters. This makes it a more environmentally friendly solution, particularly for acoustically sensitive operations.

 

Higher Power and Operational Flexibility

With power distributed across two propellers, the system allows motor power up to 800 kW, enabling it to compete with thrusters of 1.5-1.75 m diameter. This innovative approach expands application possibilities while maintaining the advantages of the CPP Tandem system.

 

Reduced Cavitation – Increased Durability

The CPP Tandem demonstrates lower cavitation sensitivity, resulting in:

  • Extended lifespan of thruster components, including blades, housing, tunnel, and grids,
  • Reduced noise generated by the propulsion system,
  • Improved performance under high-load conditions without thrust loss.

CPP Tandem – A New Standard in Hydrodynamics


The advanced design of the CPP Tandem, based on CFD analysis and model testing, ensures an optimal balance of efficiency, durability, and environmental sustainability. It is an ideal alternative to conventional single-propeller thrusters, delivering higher power output while maintaining a compact footprint.