Rolls-Royce Commercial Marine (R-R) will provide power and propulsion for all four coastal ropax vessels ordered by Havila Kystruten.
From January, 2021, Havila Kystruten will operate the four ships on the coastal route between Bergen and Kirkenes.
Of Havyard 923 design, two will be built by Spain’s Astillero Hijos de J. Barreras shipyard, while Turkey’s Tersan yard will construct the other two.
R-R will provide a fully integrated LNG power and propulsion solution to the ships. This includes two LNG fuel tanks with process systems, and control and safety systems, four Bergen gas engines, main propulsion Azipull thrusters with a permanent magnet (PM) drive motor, PM tunnel thrusters, and Neptune 2000 type stabilisers.
The main propulsion thrusters with integrated PM motors were developed in close co-operation with the ship designers, to ensure optimal integration with the hull. The energy efficient tunnel thrusters allow for a slimmer hull shape due to their narrow design, which fits well with the project’s overarching goal of energy efficiency and low emissions.
The low noise and vibration levels of the PM tunnel thrusters combined with the roll damping effect of the stabilisers, will benefit the comfort of both passengers and crew.
The R-R LNG fuel system will supply Bergen gas generator sets. Each vessel will have two engines with nine in-line cylinders, and two with six cylinders. Two separate LNG fuel systems were designed in co-operation with Havila and include the ability to bunker both tanks from the same side of the ship, as well as the option to supply the front and aft machine rooms from both tanks. This ensures high redundancy and flexibility during operation, R-R claimed.
Steinar Oppedal, R-R’s Technical Product Manager for LNG Fuel Systems, said: “Havila Kystruten has chosen a LNG fuel system that builds on our long experience with these type of systems, designed to be robust and reliable in rough weather conditions. No less important is the fact that the system and its engines will provide a significant reduction in emissions compared to conventional diesel engines.”
In addition, Norwegian Electric Systems (NES) and Norwegian Control Systems (NCS) have received the order to deliver hybrid electric propulsion and control systems from the bridge to propellers for the newbuildings.
This order is claimed to be the world’s largest battery package to be delivered to a ship.
“With this order, we will demonstrate that we have the right technology to meet future requirements for lower emissions and greener shipping,” said Sales Support Manager, Henry Myhre and President and NES CEO, Tor Leif Mongstad.
NES will deliver the complete hybrid propulsion system, including the battery pack energy storage system, which has a capacity of 6,100 kilowatts per hour per vessel, more than double that of the largest battery-operated ferries.
The propulsion system will also contain a charging element for cold ironing and it can also be adapted to the use of hydrogen and fuel cells.
NES will deliver the generators, complete switchboard systems, trafos, frequency converters for the thruster engines and the energy management system for the coastal route vessels.
NCS will also deliver an integrated automation system, integrated bridge solution and tank gauging system.
The integrated bridge solution will comprise the first delivery of the newly developed patented Raven INS.
“This is a breakthrough and it is particularly pleasing that it will be used in an entirely new market for us. Here, we will also demonstrate that we can meet official and class requirements for cruise and passenger traffic in vessels of this size, requirements that are the most stringent we have.
“We are experiencing a steady increase in demand from this market, and this contract gives us a good reference and an advantage in terms of cruise and passenger traffic,” said NES’ Mongstad.
The total value of the order was over NOK300 mill and it will provide long-term employment.
The equipment delivery will start in the summer of 2019 and the Havila coastal route vessels are due be in service from 2021