Short description: Herbert Engineering was awarded the project to help Stolt Tankers build a comparison between two different equipment suppliers. The analysis included a comparison between installing 2 sails vs 4 sails and took into account the payback time when taking into account a subsidy of $200k or 50/50 revenue sharing
Results: The payback time exceeded 20 years in all scenarios except with the 50/50 revenue sharing option. Here the payback period was 12 years for 2 sails and 17 years for 4 sails. While these results were not extremely attractive for a retrofit, a newbuilding project could give a different result, should these devices be in the design from the very beginning.