Bureau Veritas validates the wind propulsion system for a 1,800 TEU container ship
Bureau Veritas (BV), a world leader in testing, inspection and certification, has issued approval in principle (AiP) to Zéphyr & Borée for its first 1,800 TEU open-top container ship, demonstrating the feasibility of using wind-propelled wings. sail on this type of vessel.
The 185-meter-long container ship is designed with five cargo holds, most of which have an open roof. The means of propulsion comply with IMO Tier III requirements, and the vessel is fitted with shaft generators and a heat recovery system that minimizes fuel consumption. The ship’s propulsion system will be assisted by eight sails supplied by CWS (Computed Wing Sails). The design is a thick asymmetrical wing-sail that can be steered to catch port and starboard winds, and automatically adjusts for wind conditions to ensure optimum savings.
In the race to decarbonise their fleet, many shipowners are looking for alternative propulsion methods to improve the energy efficiency of their ships and reduce their emissions. Among the emerging options, wind propulsion is seen as a strong competitor to achieve significant emission reductions, using a free, clean and renewable source of energy available worldwide.
BV was involved from the very beginning of the design. The main design principles have been reviewed in order to ensure the feasibility of the concept and to identify any obstacles. The AiP confirms the design compliance with the most recent BV ratings including NR 206 on wind propulsion systems.
Nils Joyeux, CEO of Zéphyr & Borée declared: “We are convinced that wind energy will play an important role in the years to come to decarbonize the propulsion of ships. The integration of sails on container ships is an important technical challenge on which we are working very hard at Zéphyr & Borée. We are delighted to collaborate with BV on this project, which represents a key milestone in demonstrating the viability of wing sails as a wind propulsion solution for container ships. We intend to continue our work with maritime players to offer economically viable wind propulsion solutions that make a real difference for the sector.
Laurent Leblanc, Senior Vice President Technical & Operations at Bureau Veritas Marine & Offshore, said: “Wind power, although not always available, is a serious option to help decarbonise the shipping industry. Wind propulsion systems can play an important role in providing substantial propulsion energy. With this AiP, we are happy to demonstrate that the technology can be applied to container ships, which represent 17.5% of the global fleet (in tonnage). Bureau Veritas continues to lead the way in developing guidelines and frameworks for the safe and efficient use of this promising technology.
To help its customers advance in wind propulsion, Bureau Veritas has published classification rules that provide a framework for wind propulsion systems (WPS). These rules deal with safety and reliability from the design examination phase through to installation and operation, including investigation regimes and maintenance requirements. To comply with WPS rules, vessels must undergo a risk analysis, determine the local and general strength of the vessel, and define load cases, automation and release systems.
Source: Bureau Veritas