M/S Silja Europa

M/S Silja Europa is a passenger ship owned by Tallink Group, operating as a cruise ship between Helsinki and Tallinn. The HVAC system was of original design and had a lot of faults with manual control as a result. eMarine was commissioned to conduct a feasibility study in the summer of 2017 which showed a potential saving of more than 2,000 tons of fuel per year. The result of the study led to a framework agreement that was signed in August 2017 and covers the whole fleet. The installation on Silja Europa started in January 2018 and included the adjustment of supply and exhaust air in more than 1400 cabins, installation of 107 pcs frequency converters for fans and pumps, installation of new control valves and a complete new control system, custom made. eMarine Engineering will also build a new heat recovery system from auxiliary engines cooling water to main engine heating, HVAC hot water system and potable hot water production. The calculated pay-off time for the whole project is 1,5 years.

M/S Gabriella

M/S Gabriella is a passenger ship owned by Viking Line, sailing the route between Helsinki and Stockholm. eMarine Engineering was commissioned to conduct a feasibility study after having done several successful projects on Viking Lines ships. The project design was finished in February 2018 and showed a potential saving of 700 tons of fuel per year and 837 MWh of shore connected electric energy. The installation agreement was signed in April 2018 and the project will be complete in the end of the year. The installation includes adjustment of supply and exhaust air in 823 cabin units, installation of 52 pcs frequency converters for fans and pumps, installation of new control valves and a complete new control system, custom made by eMarine. The project will also include recovery of main engines cooling water to the reheating production, automation of AC room and speed control of sea water pumps, and fuel feed/booster pumps to machinery. The calculated ROI is 1,7 years.

M/S Viking Cinderella

M/S Viking Cinderella is a cruise ship owned by Viking Line, sailing the route between Stockholm and Mariehamn. The ship has recently modernized its HVAC system and made substantial energy savings but we felt that it was possible to improve even further. eMarine was chosen to conduct a feasibility study in the autumn of 2015 which showed a potential saving of 1,000 tons of fuel per year. The project began in spring 2016 and included the adjustment of supply and exhaust air in 1250 cabins, installation of 53 pcs frequency converters for fans and pumps, installation of new control valves, cleaning and speed control of 30 pcs of regotherm wheels and expansion and reprogramming of existing control systems HVAC. The project is completed and is currently in the follow-up phase, the first-quarter reports indicate that the targets are achieved with margin. Furthermore, the design is made for recovery of auxiliary engines cooling water to the domestic hot water production, automation of AC room, speed control of sea water pumps and fuel feed/booster pumps to machinery.

M/S Rosella

M/S Rosella is a passenger ship owned by Viking Line which operates between Kapellskär-Mariehamn. eMarine Engineering was chosen to conduct a feasibility study over the summer 2016 which showed a potential saving of more than 600 tons of fuel per year. The proposals include new control systems, adjustment of supply and exhaust air flows in the cabins, speed control of fans and pumps, and steam system optimization. The purchase for installation was conducted in 2017 and the installation work was completed in April 2018.

M/S Finlandia

M/S Finlandia is a passenger ferry owned by Rederi AB Eckerö and sailing between Helsinki and Tallinn. eMarine was chosen to conduct a feasibility study in 2015 and the result showed a potential saving of 800 tons of fuel per year. During the Winter 2016 the project began which included the installation of new control valves, installation of 42 frequency inverters for HVAC, pumps and engine fans, adjusting of the air flow to cabins and programming of new functions in the existing control system. The project is completed and is currently in the follow-up phase. Furthermore, a plan is executed to improve the control of the ME´s cooling water as well as for the automation of the AC-plant and accumulator tank.

M/S Wasa Express

M/S Wasa Express is a passenger ship owned by Wasaline, sailing the route between Vaasa Finland and Umeå in Sweden. No prior modernization had been done to the ship´s HVAC system and the system was in need for an upgrade. eMarine was commissioned to conduct a feasibility study in September 2017 which showed a potential saving of 800 tons of fuel per year. The result from the feasibility study led to the decision to sign a design- and installation agreement at the same time with eMarine Engineering in November 2017. The installation started in January 2018 and included installation of 75 pcs frequency converters for fans and pumps, installation of new control valves and a complete new control system. The customer also wanted to make the electric production more efficient which led to the development of a complete new battery back-up system for critical equipment from eMarine. The calculated pay-off time is 1,5 years for the energy project.

M/S XPRS

M/S Viking XPRS is a passenger ship owned by Viking Line, operating the route Tallinn – Helsinki. eMarine was chosen to design an energy-saving project in the fall of 2016. The implementation agreement was signed in October 2017 which included a new control system for HVAC, new room sensors and control equipment for ventilation units, adjustment of exhaust air in the cabins, rebuilding of chilled water system and installation of frequency converters for a number of DOL fans and pumps. The work was completed in April 2018 and the project is now in the optimization phase.

Government of Åland

In 2016 eMarine was chosen to conduct feasibility studies on 6 landscape ferries sailing in waters between the islands of Åland. The proposed measures included demand-control of fans, pumps and heating systems and improvements to the heat recovery systems from main engines.