Promas plus nozzle | Rolls-Royce

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Promas plus nozzle
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Propulsion & manoeuvring system
Promas plus nozzle

Promas plus nozzle

Designed for efficient high bollard pull applications

Built on the successful Promas, this system unites a new type of nozzle which provides large pulling power at low speed and has a high free-running speed in transit.

Promas plus nozzle propulsion & manoeuvring system

 A natural evolution of the successful Promas, this system unites a new type of nozzle with an optimised propeller, hubcap, rudder bulb and a special rudder profile developed to provide very high steering forces yet minimise drag. It meets the requirements for large pulling power at low speed with a high free-running speed in transit. Components are designed to work together in a ducted system, maximising efficiency and minimising disturbances in the water flow both through and around the nozzle. Developed through CFD testing and analysis, the nozzle is a major advance on the profile used in conventional nozzle propeller installations. In a typical anchorhandler propulsion system it will reduce fuel consumption in transit by 15% or more, and improve bollard pull by around 5%. Depending on the exact requirements the rudder may be either a one-piece design or a medium flap type.

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Propulsive efficiency improved

In general, the Promas efficiency gain is in the region of 3 – 8 per cent for single screw, and 2 – 6 per cent for twin screw vessels. Comparison tests between a conventional propeller-rudder system and Promas are shown in the graphs below.

Relative power delivered vs. ship speed - single screw vessel

The rudder area, profile shape and position are identical for the conventional and Promas cases in the graphs below. So the increase in efficiency shown is the pure effect of the bulb, hubcap, rudder twist and adapted propeller design.

Relative power delivered vs. ship speed - twin screw vessel

Improved manoeuvring at low speed

At low speed manoeuvring ie. harbour manoeuvring, a maximum side force and a maximum rudder drag is important. The graph below shows the non-dimensional lift against rudder angle for a single screw vessel.

Rudder lift vs. rudder angle - bollard pull(equivalent to low speed manoeuvring)

  • Propeller and rudder designed as a single system for optimum efficiency
  • Propulsive efficiency increased by 3 – 8 per cent
  • Nozzle option can reduce fuel consumption in transit by 15 per cent or more
  • Improved low speed manoeuvrability
  • Improved possibility for low pressure pulse/low noise propeller design
  • Almost as easy to install as a conventional propeller-rudder system
  • Simple and robust with short payback time

Services & Aftermarket Support

Customer Product Training

Offering blended teaching combining e-learning, simulator training and more.

Customer Product Training

Ensuring that your crew are properly and thoroughly trained will reduce operational risk and downtime plus maximise return on asset investment.

It also enables you to meet regulatory standards, improve crew safety and retain key personnel. In our state of the art training centres qualified and experienced trainers are able to provide your crew with practical training tailored to suit your products, systems and operational requirements. Our instructors can also train your crew on-board their vessel.

From hands on experience on full sized products in our training workshops, to experiencing real life scenarios in our virtual reality simulators all of our courses are designed to focus on safe and efficient operation and maintenance of your Rolls-Royce equipment.

Regional training centres:

  • Ålesund, Norway
  • Niteroi, Brazil
  • Singapore
E-learning

This type of solution is ideal for course preparation, where the participant is exposed to theoretical training for fundamental basic knowledge, with e-assessments throughout the module to assist in measuring the participants understanding of the basics.

Classroom

This type of solution is ideal for theoretical training, especially for larger groups. It goes through detailed systems overview including drawings and functionality.

Workshop/technical room

This type of solution is ideal for practical training with focus on maintenance and troubleshooting on actual products. This type of training used together with classroom training can provide a holistic view of complete systems.

Simulators

This type of solution is ideal for operator training where simulations of real life scenarios occurring at sea expose crew to dangerous situations in a controlled environment. They can be configured for systems or stand-alone operations like subsea, bridge, crane or winch operations.

  • DP simulator

    Practice manoeuvring around an oil platform in all types of sea conditions. Learn from realistic situations using operator stations arranged as on the vessel.

  • Winch simulator

    Enhanced with a winch remote control and monitoring system, the latest winch configurations helps crew practice and learn how to handle complex winch operations.

  • Seismic simulator

    Realistic training on deploying the streamer cable and deflector. Simulating the operator’s tasks on the back deck of a seismic vessel, using the control system together with the radio remote.

Book a course

Find out more or book a course

24/7 Technical Support

Our 24/7 technical support team is there to help at any time of day or night.

24/7 Technical Support

Our 24/7 technical support team is there to help at any time of day or night wherever your vessel is located. They manage your call from the time it is received to the time the issue is resolved.

The team has direct access to the experts in our product centres, should additional support be required, and for the more complex issues a product specialist will be assigned to you. Our priority is to get the right expertise quickly matched with the issue to provide the answers you need.

Contacting any of these numbers will put you through to our global support team:

Americas: +1 312 725 5727
Asia Pacific: +65 6818 5665
Europe, Middle East & Africa: +31 20 700 6474
Email: [email protected]

Spares

We understand the importance of having the right parts, available in the right place, at the right time.

Spares

We understand the importance of having the right parts, available in the right place, at the right time. Working in close collaboration with our customers we have now developed a Spares Transformation Programme (STP) to further improve our customer response times.

This programme will streamline our operations to reduce lead-times, increase spares availability, and allow customers to track the status of their spares delivery in real-time.

To support the programme, we have opened a dedicated Marine Parts Service Centre (MPSC) to process spares quotations and orders centrally. This is underpinned by an improved logistics and IT infrastructure, which will enable us to deliver high-quality support to our customers, wherever they are in the world.

24/7 Technical support

Our 24/7 technical support team is there to help at any time of day or night wherever your vessel is located. They manage your call from the time it is received to the time the issue is resolved.

Contacting any of these numbers will put you through to our global support team:

Americas: +1 312 725 5727
Asia Pacific: +65 6818 5665
Europe, Middle East & Africa: +31 20 700 6474
Email: [email protected]
Locate your nearest office

Our local representatives will continue to respond to your support requirements 24/7. If you would like to learn more about how this enhanced service delivery will benefit you, please contact your nearest Rolls-Royce Office

How can we help you?

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