Joint industry project on weather routing and speed optimization

SWOPP 3
An extensive industry benchmarking study on weather routing and speed optimization. 

First ever extensive industry benchmark study
The purpose of the SWOPP joint industry project is to establish a baseline by comparing results of performance predictions from the participating organisations. 

How does SWOPP 3 work?
Participants have received performance data (“polars”) for a generic wind-powered vessel, along with boundary conditions representing typical voyage scenarios. Using their own optimization tools, participants will weather-route the vessel and submit results to the organizers. 

While a description of the routing methodology and algorithms is welcome, it is not mandatory. All submitted results will be anonymized and compared.

At the conclusion of the project, participants are invited to a meeting in connection with the Innovsail conference in Gothenburg. 

Finally, there is the option to contribute to a joint publication.

Test case 
A generic primary wind-powered general cargo vessel with wing sails.

Predictions
The following results will be compared:
- Energy savings for a given maximum crossing time using speed optimization alone. 
- Savings for a given maximum crossing time using speed optimization and weather routing.

Note 
There will be no validation data available. The purpose of the exercise is to compare predictions from various methods and discuss the spreading. 

Input
RISE will provide all input required to conduct the calculations including the necessary “polars” There is no need to carry out simulations in  a Velocity/Performance Prediction Program (VPP/PPP). The purpose of SWOPP 3 is solely to compare results from different weather routing methods. Participation in the previous SWOPP 1 & 2 workshops is not a prerequisite!

Timeline SWOPP 3
31 Oct 2025 
End of Registration for standard fee (late registration will be +50%)

02 Dec 2025 
Kick off online meeting. Input given.

31 Mar 2026  
Submit results.

02 June 2026, in connection with the Innovsail conference.      
Meeting at RISE/SSPA Maritime Center in Gothenburg. Presentation of results and discussions on methods. Plan for joint publication. Facility tour, networking and social activities.

Fees
€ 3 500 including in-person meeting in Gothenburg. (€ 2 000 for enterprises with fewer than 10 employees and universities)

Registration
Email to: frederik.gerhardt@ri.se