Tunnel Thruster

Designed for easy installation and maintenance. Factory complete with tunnel section

Applicable for Dynamic Positioning and manoeuvring of the most advanced and sophisticated vessels for world-wide operations

Standard or customized Tunnel Thrusters

Brunvoll's portfolio of in-house expertise enables us to develop effective solutions for challenging projects. Our design engineers work together with the yard’s hull design team to achieve cost-effective thruster installations.

  • All Brunvoll Tunnel Thrusters are available in L- and Z-drive configurations
  • Electric motor on bed frame in vertical or tilted position
  • Electric motor on separate foundation with vertical intermediate shaft
  • Brunvoll offers a variety of tunnel extensions

Thruster design with features for heavy duty operations and low life cycle cost

Robust design, generous dimensions, and attention to details make for trouble-free performance.

Brunvoll focuses on excellent technical solutions to ensure that our thruster units can handle all the challenges of the marine environment

  • Replaceable propeller blade bearing liners
  • Various propeller blade materials and designs available
  • Controllable  pitch propeller and fixed pitch propeller versions available
  • Thruster gearbox can be removed from tunnel with propeller blades in place
  • The tunnel is made of thick steel plate reinforced with stiffener rings

Advanced multiple sealing system

  • An advanced multiple sealing system is used for the propeller shaft to provide an ideal environment for the working parts
  • Non-polluting sealing solutions available for use of Environmentally Acceptable Lubricants (EAL). Limited amounts of EAL required
  • The design complies with US EPA Vessel General Permit (VGP)

A variety of Thruster Tunnel options

The Brunvoll standard Thruster Tunnel is a rigid and robust construction with ring stiffeners and a modular motor foundation.

We may also add on a variety of options such as

  • Extra landing bars adopted to tank top and hull frames
  • Extra ring stiffeners adapted to centre girder
  • Tunnel extensions, either straight cut or cut to suit hull lines
  • Protection grids

Customized solutions – trunk mounted tunnel thruster

  • Thruster unit arranged in a trunk with a bolt in tank top plate
  • Heavy steel structure and bottom guiding arrangement and support by conical studs
  • Reduces the yard’s installation work and responsibility
  • Brunvoll trunk-mounted tunnel thruster unit can be removed for easy service access and repair without dry-docking the vessel

Complete system deliveries

One source - one responsibility

For optimal performance Brunvoll takes responsibility for delivering complete systems and for providing support throughout the lifetime; from design, production, installation and commissioning, through daily operation.

Ask us for a complete thruster system including:

  • Electric drive motor, asynchronous or Permanent Magnet type
  • Starter or VFD for the motor
  • BruCon Control, Alarm and Monitoring system
  • BruCon Joystick and DP

Compile your vessel from Brunvoll's  product range

The wide product range of Brunvoll gives a unique configuration flexibility of integrated propulsion, manoeuvring and automation systems, see Propulsion Systems.


FU 37 850 75 - 200
1000 100 - 250
FU 45 1 225 185 - 300
1375 275 - 450
FU 63 1 550 400 - 700
1 750 600 - 950
FU 74 2 000 800 - 1 400
FU 80 2 250 1 000 - 1 500
FU 93 2 500 1 400 - 2 200
FU 100 2 750 1 800 - 2 500
FU 115 3 000 2 500 - 3 500
FU 135 3 500 3 700 - 5 000
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Technical Information

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Please contact us for any further information you may require about this solution

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Joar Heggset

Joar Heggset

Sales Manager, Brunvoll AS

+47 91 630 640
Montserrat Lugrís López

Montserrat Lugrís López

Sales Manager, Brunvoll AS

+47 906 28 360

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