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Maritime

Rim Drive Tunnel Thruster

Rim Drive Tunnel Thruster (RD-TT)

Embracing Decarbonization for a Sustainable Future

The KONGSBERG Rim Drive Tunnel Thruster (RD-TT) advances marine technology with a focus on sustainability, efficiency, and environmental protection. Its low environmental footprint, enhanced hydrodynamic efficiency, and minimized hydroacoustic noise significantly contribute to decarbonization efforts and the protection of marine life in the maritime industry.

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Rim Drive Tunnel Thruster (RD-TT)

Suitable Applications

The RD-TT is designed for the most demanding marine environments, making it ideal for:

  • Dynamic positioning vessels
  • Offshore supply vessels
  • Ferries
  • Cruise ships
  • Research vessels

The RD-TT's advanced PM motor technology ensures unmatched efficiency and performance, vital for eco-friendly maritime operations.

Features & advantages

  • Main Features

    • Compact Inboard Footprint: Saves valuable space on board.
    • Electric and Hydrodynamic Efficiency: Maximizes performance and reduces energy consumption.
    • Robust Design: Durable construction with minimal rotating parts.
    • Seawater Cooling: Thruster unit is efficiently cooled by surrounding seawater, eliminating the need for additional cooling systems.
    • Space-Saving PM Technology: High torque density in a compact form.
    • Sturdy Centre Shaft: Capable of carrying all propeller loads.
    • Simplified System Design: Minimal auxiliary equipment needed.
    • EHM System Ready: Easy integration with Equipment Health Management systems.

  • Key Benefits

    • Equal Thrust in Both Directions: Ensures maneuverability and control.
    • Compact Footprint: Saves space in the thruster room.
    • Low Noise and Vibrations: Minimizes hydroacoustic noise, protecting marine life.
    • Quick Response Time: Efficient roll-damping for better stability.
    • Cost Efficiency: Reduced life cycle and installation costs.
    • Long Service Intervals: Lower maintenance frequency for operational reliability.
    • Robust Design: Durable with minimal rotating parts.
    • Ease of Integration: Simple connection to Equipment Health Management systems.

  • Reliable, Efficient, and Cost-Effective

    The Rim Drive Tunnel Thruster (RD-TT) is designed for reliability and reduced life cycle costs. Its permanent magnet motor technology enhances efficiency and compactness, with only the variable frequency drive unit housed in the thruster room, saving onboard space.

    Available in 1,000 and 1,600 kW, the RD-TT is ideal for demanding applications like dynamic positioning.

Rim Drive Tunnel Thruster

Thruster type RD-TT 1600 RD-TT 2000
Power (kw) 500 – 1000 1000 - 1600
Thrust (kN) 156 kN 243 kN
RPM 340 280
Propeller dia (mm) 1600 2000
Propeller type Monobloc/FP Monobloc/FP
Direction of rotation CW/CCW CW/CCW
Drive AFE or 12 pulse drive AFE or 12 pulse drive

Space saving installation

Due to its symmetric design the permanent magnet tunnel thruster provides increased flexibility for the ship designer to achieve a more optimal and space-saving installation.

Kongsberg Rim Drive Tunnel Thruster (RD-TT) is formerly known as Permanent Magnet Tunnel Thruster (TT-PM)

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