Maximize wind propulsion benefits by voyage optimization

Norsepower has signed a formal agreement with NAPA to use voyage optimization tools and help vessels maximize the wind propulsion benefits.

A new agreement will use voyage optimization tools to help vessels maximize the wind propulsion benefits in their voyage planning to boost fuel savings and emissions reductions.


Finland-based clean tech company Norsepower has signed a formal agreement with NAPA. Namely, a compatriot maritime software, services, and data analysis provider. Hence, to offer weather routing software in combination with its Rotor Sails solution to maximize wind propulsion benefits. 

NAPA Voyage Optimization software will assist as an option in all future sales of Norsepower’s Rotor Sails solution. 

The combined offer applies to retrofits as well as newbuilds. Thus, it will enable shipowners to maximize both fuel savings and emissions reductions, according to the duo. 

The combination of voyage optimization and wind propulsion will expectedly; provide significant potential for increased performance, compared to either of the two technologies alone. The software determines the best possible voyage plan for the vessel to maximize energy savings. Meantime, taking into account weather conditions throughout the voyage as well as each ship’s design profile and operational requirements. 

The Norsepower Rotor Sail is a modernized version of the Flettner rotor; a spinning cylinder that uses the Magnus effect to harness wind power and generate thrust. Hence, reducing fuel consumption and emissions by an average of between 10-25%. 

The solution has so far applied on six different vessels, with further orders confirmed with CLdN, the logistics specialist for road, sea, and rail. 

NAPA Voyage Optimization solution enables captains and ship managers to choose the routes that will minimize their fuel consumption and emissions, depending on the weather conditions. Importantly, the suggested routes are, tailored to the designs and characteristics of each ship, using vessel-specific digital models to assess and predict performance under different conditions. This is to ensure Norsepower’s Rotor Sails system is, specifically considered in the ship performance models to deliver optimal routing. 

Maximize wind propulsion benefits by voyage optimization
NAPA Voyage Optimization. Courtesy of NAPA.
Different takes

“Our Rotor Sails already offer fuel and associated emissions savings of up to 25%. However, savings can be significantly enhanced when used alongside weather routing software. Given the magnitude of the energy transition challenge, combining commercially-proven solutions enables shipowners to take the next step to not only meet regulatory targets, but exceeding them… Vessels using the solutions available today will be able to decarbonize faster. It will also help shipowners achieve greater climate alignment compliance scores, including the IMO’s Carbon Intensity Indicator (CII) as well as supporting the ship finance portfolios that are influenced by the requirements of directives such as the Poseidon Principles and Sea Cargo charter clauses.”

Tuomas Riski, CEO of Norsepower

“Advanced weather routing is essential for all ships, but it is particularly important for wind-assisted vessels. Now that wind propulsion solutions are becoming a reality for a growing number of ocean-going vessels, we are taking this to the next level with voyage optimization software which can fully model various cleantech solutions in all weather conditions, taking into account design data for each individual vessel,” 

Pekka Pakkanen, Executive Vice President at NAPA Shipping Solutions

Source: Norsepower

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