Skip to main content

Rim Drive Tunnel Thruster (RD-TT)

Embracing decarbonization for a sustainable future

The 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.

Skip to content

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
  • 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.
    • 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: Excellent manoeuvrability.
    • 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 and two small gravity tanks housed in the thruster room, saving onboard space.

    Available from 1000 up to 2700 kW, the RD-TT is ideal for demanding applications like dynamic positioning.

Rim Drive Tunnel Thruster

Technical data

Thruster type RD-TT 1600 RD-TT 2000 RD-TT 2300 RD-TT 2600
Power (kw) 1000 1600 2100 2700
Thrust (kN) 156  243  320 410
RPM 340 280 240 212
Propeller dia (mm) 1600 2000 2300 2600
Propeller type Monobloc/FP Monobloc/FP Monobloc/FP Monobloc/FP
Direction of rotation CW/CCW CW/CCW CW/CCW CW/CCW
Drive AFE or 12 pulse drive AFE or 12 pulse 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 Maritime Rim Drive Tunnel Thruster (RD-TT) is formerly known as Permanent Magnet Tunnel Thruster (TT-PM)

Request information

Lifecycle support for your vessel

  • 24/7 Technical support

    Get expert help anytime, anywhere—our global support team is available 24/7 to assist you.

  • Training

    Explore our training programs to build skills, ensure safety, and maximize operational efficiency.

Downloads

Related products and categories