ProteusDS v2.43 is now available

It’s the most wonderful time of the year!

ProteusDS v2.43 is now available for download.

The software is ready to go, and login credentials for active subscribers will allow you to access ProteusDS v2.43 from our website.


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In case you’re wondering what’s new, we’ve highlighted some of the critical new features below.

NEW Cable State Generator

First and particularly noteworthy, we’ve created a new way to define cable segments and elements in PST. Activate the new tool with the $CableSegmentMode property in the Cable input file. The new state generator makes it much easier to create segments and ensure that nodes are placed at the correct arc length. It also allows you to remesh a cable very quickly – adding resolution to the part of your model that needs it – through specification of the number of elements in each segment.

Image of the ProteusDS toolbox Cable State Generator

New cable state generator allows you to remesh quickly, and more efficiently match cable segment lengths with node positions.


NEW Net Modeling Enhancements

We’re introducing three key new features for net modellers: First, a default axial damping coefficient is now determined based on element lengths and stiffnesses. This option will typically speed up simulations which are not optimized for axial damping.

The second new feature permits the simulation of disk nets like the one shown in the figure below. By specifying edge lengths of 0 for Edge 1 (i.e. setting the inner radius to 0 in the disk net IC generator), the solver now automatically adds a constraint which prevents separation of the nodes along edge 1.

Lastly, the net state generator has been updated to recall what settings were used to create the net. A new framework has been built into PST that will allow us to remember more user’s settings and preferences going forward.

Image of net model enhancements in ProteusDS

The net model now allows you to model disk nets without a hole in the centre – which is much closer to how nets are constructed.

Wave Drift Modeling

We’ve added the ability to model slowly varying wave-drift loads using sum difference quadratic transfer functions (QTFs). This capability has been added to the RigidBodyRadDiffHydordynamic feature’s hydrodynamic database).

The capability has been validated using published data, and a description of the implemented approach has been described in a report available on our website here: Wave drift modeling report.

Thrusters and Propellers

You can now model thrusters and propellers through specification of thrust and torque curves. Modeling options that are supported include wake fraction, fluid dynamic inertia, thrust deduction, and azimuthing propellers.

The RPM of a propeller can be adjusted through the ProteusDS API, which is ideal for maneuvering of dynamic positioning studies in which you want maximal control over the propeller. A thruster is added to a RigidBody at a particular location, and orientation using a Thruster feature, much like when you add a hydrodynamic mesh model (e.g. cylinder or cuboid). This means that thruster/propeller model parameters can be centrally adjusted.

Image of a thruster in ProteusDS

Model propellers accurately for DP and seakeeping/maneuvering studies.


So, that’s ProteusDS 2.43 – we hope you enjoy it and find the new features useful.


For a complete list of additions, changes, and resolved issues

Emerald Isle Bound for EWTEC 2017

We are packing our bags and heading to Cork, Ireland for the 12th Annual European Wave and Tidal Energy Conference (EWTEC). EWTEC brings together leaders in research and development in ocean renewable energy. DSA is privileged to be counted among the attendees.

Our team has put together our top reasons for attending EWTEC, and to let you know what we will be up to while we are there…

  1. To learn:

  •     To Increase our understanding of emerging markets and technologies
  •     Expand our technical expertise through seminar attendance
  •     Visit the global leader in ocean energy – the UK and Ireland currently have more wave and tidal energy devices tested than the rest of the world combined
  1. To network:

  •     Representatives from over 40 countries are in attendance
  •     100+ speakers are sharing thoughts and experiences on ocean energy
  •     Over 400 ocean energy delegates will be in attendance
  •     International exhibitors – find DSA at the Canadian Pavilion.
  •     Connecting with decision makers from across Ireland, United Kingdom, Europe, and international markets.
  1. To share:

  •     Exchange information with fellow ocean energy experts
  •     Share our experiences working with industry leaders in tidal and wave power generation.
  •     Showcase our team’s extensive experience using our validated time-domain software ProteusDS for mooring and installation analysis
  •     We are presenting three papers – check out our listing below
  1. To partner:

  •     Start conversation on big ideas and conversations
  •     Explore the potential of new and existing ocean energy projects.
  1. To have fun:

  •     We love Ireland!  
  •     Discover Cork, Ireland
  •     Visit Europe’s newest test tank, the state of the art, Lir National Ocean Test Facility


Paper presentation schedule:

Title : Dynamic Analysis Validation of the Floating ecoSpray Tidal Energy Test Platform

Date: Tuesday, August 29th

Time: 2- 3:20pm

Stream: Station-Keeping, Moorings & Foundations 1

Room: Kane Building, Room G19

Image of the ecoSpray Tidal energy platform images merged from real-life to simulation

The ecoSpray Tidal energy platform


Abstract: Floating tidal power generation platforms are developed due to their advantages in positioning turbines in strong surface flows, and their potentially more cost effective installation, operation, and maintenance. Developing a platform and mooring system capable of withstanding large turbine thrust loads and wave loads is needed. Numerical modeling of the system is critical to reliably dimension the components without over engineering and overspending. Validation of numerical models using full scale platform deployment data and accurate wave, current, and wind measurements is required to reduce risks. This process ensures sound engineering assumptions are employed, which leads to optimized structural design and reduced cost. With the goal of reducing risks associated with floating tidal platforms, the ecoSpray tidal energy test platform was deployed in Grand Passage, N.S., Canada in March 2016. The design process, construction, and deployment of the ecoSpray platform, moorings, and anchor blocks provide valuable experience for the industry. The development and validation of the floating platform numerical model in ProteusDS and the boundary element method (BEM) code ShipMo3D is reviewed. The results of the time-domain simulations are compared with data from the deployment.

Title: PLAT-O at FloWave: A validation of ProteusDS at modelling response of a taut-moored tidal platform at tank-testing scale

Date: Wednesday, August 30th

Time: 2- 3:20pm

Stream:  Tidal Device Development & Testing 9

Room: Geography Building, Lecture Theatre

Image of Sustainable Marine Energies PLAT-O at full scale with two 1st generation SITs

Two (first generation) SITs mounted on PLAT-O1


Abstract: The motion and mooring tensions of a scaled-down PLAT-O#2 physical model was measured in axial currents at FloWave, Edinburgh. At high flows, the platform ‘squats’ – arc motion along the upstream lines and about their anchors – to a stable lower depth. The compliance improves load share and survivability in extreme seas. To further investigate the squatting motion, the tested set-up is simulated ‘like-for-like’ in ProteusDS software. The modelled and measured trends, motion and line loads, are comparable. A significant lift force is identified with further work focused on estimating it at sea.

Title: IEA OES Task 10 WEC Modelling Verification and Validation

Date/time/location: To be determined

Abstract: This paper is the first joint reference paper for the OES Task 10 WEC modelling verification and validation group. The group is established under the Ocean Energy Systems (OES) Energy Technology Network program under International Energy Agency (IEA). OES was founded in 2001 and task 10 was proposed by Bob Thresher (NREL) in 2015 and approved by the OES Executive Committee EXCO in 2016. The kick-off workshop took place in September 2016 where the initial base line task was defined. Experience from similar offshore wind validation/verification projects (OC3-OC5 conducted within the International Energy Agency Wind Task 30) [1], [2] showed that a simple test case would help the initial cooperation in order to present results in a comparable way. A heaving sphere was chosen as the first test case. The group of project participants simulated different numerical experiments such as heave decay tests, regular and irregular wave cases. The simulation results submitted by the project participants are presented and discussed within this paper.

Ryan Nicoll Receives International Award For Moorings Work

Ryan Nicoll, Director of Engineering and co-founder of DSA, has received the 1906 Award from the International Electrotechnical Commission (IEC) for his tireless contributions towards the development of mooring standards for marine renewable energy applications.

Image of Ryan Nicoll's 1906-Award from the International Electrotechnical Commission (IEC)

Ryan Nicoll receives 1906 Award from IEC


The IEC 1906 award was created in 2004 to commemorate the IEC’s year of foundation and to honour IEC subject matter experts. The award recognizes exceptional, and recent achievement by experts on a project or other specific contribution related to the activities of the IEC and which contributes in a significant way to advancing the work of the IEC.

The letter attached to the award reads;

Ryan Nicoll has been recognized for the significant leadership he provides to IEC TC 114 Marine Energy, as convenor of Adhoc Group 6 and as the Canadian Head of Delegation.

Furthermore, he contributes broadly to the efforts of TC 114.We would also like to take this opportunity to thank your organization for its commitment and support for Canadians participating in standardization activities, and in sustaining Canada’s national standards network.

Congratulations Ryan!


Top Reasons To Invest In ProteusDS Training

Image of a keyboard with typing fingers

We work in technology-rich workplaces, where we need to keep skills current to ensure that the companies we work for stay competitive. Professional development has many benefits, and DSA wants to help you and your business to continue running effectively and efficiently.

Image of a keyboard with typing fingers


Whether you are a new ProteusDS user or a seasoned pro, regular professional development and software training can build skills within your company that will improve your bottom-line by ensuring you are using the most effective tools and processes.

We’ve compiled some of the top reasons to invest in ProteusDS training:

#1 Keep up with industry changes

Ocean engineering best practices are always evolving, to avoid being left behind it’s important for you and your business to keep on top of them. At DSA we work across many ocean sectors which give us a tremendous knowledge base to draw upon in training sessions. To the benefit of all attendees, standards and recommended practices for analyses are frequently discussed during training.

#2 Keep in touch with the latest features

New features within ProteusDS are developed all the time! Our team announces these advancements in all our major releases updates. In a training session, you can discover first-hand how these new features are used. In addition, not every feature is discussed in the tutorials or in release announcements. We often dive into these lesser-known features in our training sessions.

#3 Keep one step ahead of the competition

Training helps users be more productive and efficient. Huge investments in tools without the appropriate training can signify inefficiencies that affect your company’s competitiveness. We find that users who invest in training find new and better ways to ProteusDS that save their businesses time and money.

#4 Keep connected with the software developers

Training with the software developers has three significant benefits. First, you are learning from the experts. Second, if you are encountering complex issues or have concerns with your simulations these issues are addressed quickly and efficiently.  Lastly, training sessions provide an invaluable opportunity for you to give feedback to DSA that can guide future developments that will make your ProteusDS usage more efficient and tailored to your specific needs.


Image of ProteusDS training in Singapore

A.J. Baron, Project Engineer with DSA leading ProteusDS training in Singapore, March 2017



Interested in learning more about ProteusDS training options? Want to book training today?

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ProteusDS v2.36 is now available

Image of powerful bathymetry analysis features in PostPDS

DSA is very pleased to announce the release of ProteusDS v2.36. The software is ready to go and active subscribers can use their login credentials to download the latest version from our website. We’ve highlighted some of the key new features below.

Support for visualization-only models

A good computational model is very different than a 3D model used for purely visualization purposes. Because of this, we have added the ability to handle models that are to be used for visualization purposes only. Now, in the ProteusDS Simulation Toolbox, you can add a $VisualizationModel property to a RigidBody. The model specified through this property is not used for computations. We have added functionality in both PostPDS and ProteusDS Simulation Toolbox to toggle visualization or computational models on or off.

Image of Blended copmutational vs visualization labels

Comparing computational and visualization display modes in PostPDS


Bathymetry analysis

We have released a set of powerful bathymetry analysis features in PostPDS that allow users to assess seabed slope and depth. To access these features, simply right-click on the Seabed item in the Categories tree in the UI, and select the appropriate Bathymetry Plotting option. The depth and slope plots now have legends that make it easy to interpret seabed data. The exclusion zone plot allows you to find safe regions to place equipment or position anchors.

Image of powerful bathymetry analysis features in PostPDS

PostPDS showing the slopes in a bathymetry file using the bathymetry plotting options


Modeling ropes that are sewn into nets

For our aquaculture and net-modeling users, we have added support for modeling rib-lines or “structural lines” that are frequently sewn into nets to add strength and shape. This is done within the Net DObject itself and not using additional Cable DObjects. This dramatically reduces the numbers of DObjects and connections required to simulate a net pen with rib lines leading to faster simulations. To apply a rib-line to a net, use the $ExtCableLongitudinal or $ExtCableTransverse property in the Net input file.

We have also added an option to connect the end of a line to any point on a net. You do not have to connect a line directly to a node! This is much easier for creating supporting lines in net pens. To create this connection specify the Net as the master and the Cable as the follower, and use the Point connection type.

Image of structural lines that are swen into net panels

Visualization of structural lines (indicated in yellow) that are sewn into net panels.This feature reduced net analysis complexity significantly.


So, that’s ProteusDS 2.36 – we hope you enjoy it and find the new features useful.

v2.36 Changelog


  • Added time history plot functionality for RigidBody DObject in PostPDS
  • Added legends for bathymetry plots in PostPDS
  • Added support for computational and visualization models in ProteusDS solver, PST, and PostPDS
  • Added height above seabed probe to RigidBody to check for clearance
  • Added inclination angle and tension output for ExtMass and ExtMassCylinder attachments
  • Added ability to connect the end of a cable to anywhere on a net panel
  • Added ExtCable functionality to Net DObject to allow for modeling of ropes which are sewn into nets to provide strength and shape


  • Enhanced ‘Duplicate Selected DObject(s)’ functionality to allow for optional duplication of connections

Resolved issues:

  • Addressed overlapping water rendering
  • Improved full-screen support with ability to toggle the display device that the full-screen window appears on by pressing ‘F1’
  • Addressed mooring line naming issue with taut leg mooring generator

View our 2015 changelog here