SulNOx has made its first public foray into the cruise market following a successful evaluation by Crystal of its decarbonization product, the SulNOxEco Fuel Conditioner.

The company said in a press release that Crystal is now adopting SulNOxEco across its fleet. The news follows Eastern Pacific Shipping, which announced the same adoption onboard 30 vessels in its fleet.

SulNOx CEO Ben Richardson said: “We are excited to be working with a well-known brand in the fast-growing cruise ship market. The flip side of this increasingly popular leisure activity is the existing and potential level of environmental pollution from some extremely large vessels.”

“SulNOx is pleased to be part of the solution for the industry, helping to reduce emissions significantly while delivering fuel cost savings and supporting ship operators to meet ESG and CII goals,” added Richardson.

According to the press release, the Crystal Symphony took three deliveries of SulNOxEco Conditioner while berthed in Greece in April, Germany in August and Italy in November 2024.

An evaluation between May and December 2024 showed an average fuel saving of 3.4 percent throughout the period.

The company added that data also noted a significant reduction in black smoke from the Symphony’s stacks.

Roberto Fazi, senior vice president of marine operations at Crystal, said: “The results of the tests carried out after the introduction of SulNOxEco onboard have proven to be very promising. We observed measurable fuel savings, cleaner engines and reduced emissions.”

“As sustainability becomes a key driver for growth in the cruise sector, this innovation helps us enhance operational efficiency, reduce our environmental impact and provide a more sustainable experience for our guests,” added Fazi.

Angus MacDonald, director of SulNOx master distributor A&S International, said: “It has been a pleasure working closely with the Crystal team and the Crystal Symphony crew, demonstrating the emission reduction and fuel-saving capabilities of SulNOxEco over the extensive evaluation.”

“The real-world benefits are plain to see, and we’re excited to continue supporting the maritime industry’s journey toward a greener future,” he added.