Marine chemicals


WSS’s extensive marine chemicals portfolio includes two of the industry's most trusted and respected brands (Nalfleet and Unitor) and is aligned to meet customer needs and global standards.


The operational, technical and regulatory challenge that today’s fleet manager’s face are unique and demand tailor-made solutions. With 150 years of experience, a trusted and innovative product range and a dynamic global network, we work in partnership with our customers to ensure that these challenges are met.





“As the world’s largest supplier of marine chemicals, we recognise our responsibility to provide customers and their crews with the proper training and support needed to maintain their vessels, and consequently, to help optimise performance.”



» Learn how we can support your crew to optimise vessel performance







Cleaning chemicals


Water treatment chemicals


Water treatment equipment



Fuel oil treatment chemicals


Fuel oil treatment equipment


Test kits and reagents