Why Crystal Cruises Adopted Sulnox Eco™
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Why Crystal Cruises Adopted Sulnox Eco™
Lower Fuel Costs, Fewer Emissions, Zero CAPEX.
Crystal Cruises, a leader in exceptional cruise experiences, conducted an eight-month evaluation of Sulnox Eco to assess its fuel efficiency and emissions reduction benefits.
The 100% organic fuel conditioner was evaluated from May to December 2024 aboard the Crystal Symphony, organised in collaboration with Sulnox master distributor A&S International.
The Nassau-registered 51,068 gross tonnage vessel, powered by six Wärtsilä-Sulzer diesel engines, took three deliveries of Sulnox Eco—initially while berthed in Greece in April 2024, then Germany in August, and Italy in November.
01 - PROVEN FUEL SAVINGS
Fuel represents one of the biggest operating costs in the cruise industry.
During the evaluation, Crystal Symphony achieved an average fuel saving of 3.4%, reducing consumption without requiring any capital investment or changes to operations.
02 - A CLEANER OPERATION
Cruise ships operate in some of the world’s most environmentally sensitive regions, including the Norwegian fjords and protected marine ecosystems.
With Sulnox Eco delivering more complete combustion, Crystal saw a significant reduction in black smoke from Symphony’s stack; minimising their environmental impact while ensuring continued access to these pristine waters.
This reduction in particulate matter (PM) supports their commitment to responsible tourism and cleaner cruising.
03 - SUPPORTING SUSTAINABLE CRUISING
Reducing black smoke emissions supports Crystal’s commitment to sustainability—but it also brings direct onboard benefits:
✓ Enhanced air quality for guests and crew
✓ Cleaner pools and outdoor areas
✓ Less soot build-up on decks and exterior surfaces
By cutting emissions at the source, Sulnox Eco helps maintain a cleaner, fresher onboard experience while reducing long-term maintenance needs.
Sulnox Eco In Action On Crystal Symphony
PRODUCT USED
Download the full case study
Why Sulnox Eco Is The Right Choice
Following a successful evaluation, Crystal are preparing to adopt Sulnox Eco across their fleet, ensuring that their guests experience the highest standards of luxury while they continue their journey toward a more sustainable future.
“The results of the tests carried out after the introduction of Sulnox Eco 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.”
ROBERTO FAZI
Senior Vice President of Marine Operations Crystal Cruises
Enabling Sulnox Eco Adoption
Sulnox Eco’s successful evaluation aboard Crystal Symphony was organised in collaboration with A&S International, SulNOx’s Master Distributor. A&S played a critical role in securing the evaluation agreement, supporting implementation, and ensuring the project’s success.
“Crystal Cruises’ decision to adopt Sulnox Eco follows a rigorous evaluation that we coordinated closely with their team. As their trusted partner, we are proud to have facilitated this journey toward more sustainable cruising.”
ANGUS MACDONALD
Co-Founder and Director
A&S International
SulNOx reduces emissions and creates fuel efficiencies through unique, game-changing fuel conditioners.
Benefits of using Sulnox*
- Fuel savings of 4-8%
- Lower engine oil temperatures
- Lower coolant temperatures
- Lower exhaust temperatures
- Reduced AdBlue consumption
- Increased Power & Torque
Environmental benefits of Sulnox*
- >60% reduction in Particulate Matter 2.5
- >50% reduction in Particulate Matter 10
- >30% reduction in a range of other GHG emissions
Taking you further, faster and cleaner
SULNOX SAVINGS CALCULATOR
Scan the QR code or CLICK HERE to get an indication of the Financial Savings and CO2 Reductions that your business could achieve.
