Case Studies

Grimaldi Green 5th Generation

Owner: Grimaldi Group
Type: Ro- Ro
LIM: 7800 
LOA: 235m
Beam: 34m
Draught: 7.2m (laden)
Operating speed range: 12 – 21 knots
Build: 2020- 2023
Yard: Jingling, China
Class: RINA SpA

Case Study: New Build

In August 2018 Grimaldi Group announced that it would be installing the Silverstream® System on 12 new hybrid Ro-Ro vessels. Grimaldi’s Green 5th Generation (GG5G) vessels, which are designed to increase efficiency and reduce emissions will be built over the next three years at the Chinese shipyard Jinling. Silverstream will be responsible for designing and supplying the system and will assist the shipyard during installation and commissioning. The first vessel will be completed by May 2020 and is expected to be operational on Mediterranean Ro-Ro Trade routes by Q3 2020.

Diamond Princess

Owner: Carnival Corporation & plc
Type: Passenger Ship
No. of Passengers/ Crew: 3,770
DWT: 14,601
LOA: 290m
Beam: 37.5m
Draught: 8.5m (laden)
Operating speed range: 15- 23 knots
Build: 2004
Yard: M.H.I., Nagasaki
Flag: U.K.
Class: Lloyd’s Register

Case Study: Retrofit

The retrofitted installation on the Diamond Princess entered operation in June 2017.  The system was supplied within 20 weeks, including transit from Northern Europe to the shipyard in Asia.  Following installation of the air release units and compressors during a 10 day dry dock, the system was completed and commissioned by a riding crew during normal operations, prior to handing over the system.  In- depth data analysis took place between commissioning and August 2018 which proved the system to be delivering fuel savings and emissions reductions above the projected 5%.


Owner: Norwegian Cruise Lines
Type: Breakaway+ Passenger Ship
No. of Passengers/ Crew: 5,704
GT: 163,000
LOA: 325.9m
Beam: 41.4m
Draught: 9m
Operating speed range: 18- 26 knots
Build: 2017
Yard: Meyer Werft, Germany
Flag: Bahamas
Class: DNV- GL

Case Study: New Build

The Norwegian Joy entered service in June 2017 following her build at the Meyer Werft yard in Pappenburg.  Silverstream worked closely with the yard during the 2.5 year build programme to supply and install the Silverstream® System.  The air release units were fabricated off- site then welded into the double hull and the compressors were supplied by Atlas Copco and linked to the Wärtsilä automation system.  Silverstream was present during the sea trials to provide training and assistance to the crew prior to the handover of the vessel.  The Norwegian Joy is the first cruise ship in the world to save fuel with the Silverstream®System.


Owner: Weco Takers (Dannebrog Rederi)
Type: Oil/ Chemical Tanker
DWT: 40059
LOA: 176m
Beam: 31m
Draught: 10.5m (laden)
Operating speed range: 12- 16 knots
Build: 2004
Yard: ShinaSB, Korea
Flag: Gibraltar
Class: RINA SpA

Case Study: Retrofit

In partnership with Shell and Dannebrog Rederi/ WECO Tankers, the Silverstream® System was installed on the Amalienborg in just 14 days. Air release units were manufactured to order and welded into place during a standard dry docking by Fayard’s onsite engineers. Compressors were located in the bosun store and the automation system on the bridge. Both contractors  and crew commented on the ease of installation and operation.%.