SCR retrofit allows Ambassador Cruise Lines’ Ambience to supply Norwegian Heritage Fjordcruises
U.Okay. based mostly Ambassador Cruise Line, whose vessels are managed by Bernhard Schulte Cruise Services, has retrofitted its 1,400 passenger Ambience with a selective catalytic discount system to allow it to supply its company “no-fly” cruises from the U.Okay. Norwegian Heritage Fjord market with its exacting Tier III emission requirements.
The Ambience was delivered to Princess Cruises in 1991 by the Fincantieri shipyard in Monfalcone, Italy as Regal Princess, crusing on North American routes. After a profession that included working within the Australian market as Pacific Dawn and a COVID-thwarted plan to transform her to a residence ship, she entered service with Ambassador in 2022 underneath her current title.
The SCR retrofit was carried out by MAN Energy Solutions’ after-sales division, MAN PrimeServ. The scope of the undertaking lined the set up of SCR (Selective Catalytic Reduction) programs, whereas two of the ship’s 4 MAN 8L58/64 engines changed their NA57/T turbochargers with trendy MAN TCA 66 models.
“This retrofit really establishes Ambassador’s green credentials within the cruise segment and the SCR solution is performing well with a NOx removal rate of 93%,” mentioned Olaf Gunia, head of PrimeServ Hamburg. “Increasingly, we are receiving similar requests from cruise and ferry operations that wish to become sustainable without the need for mandated industry legislation.”
“This entire project proved challenging owing to – among other factors – the long cold lay-up of the ship due to the COVID-19 pandemic, and the tight timeframe for completion,” mentioned Bernd Siebert, head of retrofits & upgrades, MAN PrimeServ. “Happily, our work on the Ambience has optimized the interaction between the newly installed SCR system, turbochargers and engines and the vessel is now Tier III-compatible and fit for service in one of the globe’s most pristine, natural environments.”
MAN says its SCR system is the greenest answer accessible in the marketplace with the best operational readiness and security. The SCR shall be accessible from simply 15% engine load, enabling clear operation, throughout slow-sailing within the fjords in addition to near port and populated areas.
The absolutely modular cruise ship SCR retrofit answer has been absolutely built-in into the Ambience’s engine-control set-up. With its closed-loop system and a climate station that makes use of environmental knowledge, the NOx-reduction charge is maximized and ammonia-slip minimized to only 10 ppm, corresponding to that of a automobile. As effectively as defending the surroundings, low ammonia slip reduces urea consumption enabling the urea-tank dimension to be minimized.
