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10 years of LNG at sea
 
10 years of LNG at sea
Better power for a changing world
10 years of LNG at sea
Rolls-Royce has significant and growing experience with its Bergen lean-burn technology. More than 650 gas engines have been delivered for operation on land or at sea, and more than 31 million running hours of experience have been accumulated.
Discover
Delivering clean power for the future

The marine industry relies on fuel oils for most powering needs, but tighter emission regulations and the need to ‘go green’ are starting to convince operators to consider alternatives. Rolls-Royce gas engines have proven themselves to be the cleanest, most efficient piston engines on the market. Since the introduction of the Bergen lean-burn technology more than 700 gas engines have been delivered and over 31 million operating hours accumulated at sea and on land.

Low emissions
Responsiveness
Low maintenance
Safety
Fuel efficiency

Mixing gas and air together for combustion at the right time is crucial to maximizing the efficiency of our engines. Bergen lean burn gas engines turn around 50% of the energy in the fuel into power at the flywheel. If a waste heat recovery system is added this figure could potentially rise by a further 20%, depending on the technology used.

The lean burn system combines spark-ignition with a prechamber, so the engine uses a lean mixture of gas and air. At the start of the compression stroke a valve feeds the right amount of gas for ignition into the prechamber, where it is ignited by the spark plug at the right moment.

This charge is directed into the cylinder, bringing enough energy to ignite the lean mixture.

Advanced control systems meter the gas, control the air pressure, valve and ignition timing. Knock sensors detect changes and adjust the control system, ensuring methane slip is reduced to very low levels. The engine combustion technology is robust and ensures that the engines can operate on a wide range of gas qualities.

“Using the Rolls-Royce Power Management system, engines can be run at their most efficient load, minimising fuel consumption and helping our customers cut their total emissions.”

Trond Hauge
Technical Manager, Island Offshore

Systems
Explore our ship systems

Rolls-Royce tailors the entire system design, combining gas engines with an efficient propulsion system to meet individual customer needs and the operating profile of the vessel. We can also add an efficient hull design, and – if needed – a hybrid solution with PTI/PTO to provide system flexibility. Our delivery also includes a complete automation and control system where all equipment is interfaced with optimum efficiency and operating economy.

Passenger
Cargo
Tug
Offshore
Cargo  |  Features

Bergen medium speed gas engines are an ideal choice for short sea shipment vessels. Rolls-Royce tailors the entire system design, combining gas engines with an efficient propulsion system to meet the customer’s needs and the operating profile of the vessel. We can also add an efficient hull design, and – if needed – a hybrid solution with PTI/PTO to provide system flexibility.

Bergen gas engines deliver a significant reduction in fuel and lubrication oil consumption. In addition, the clean, safe engine rooms and state-of-the-art technology attract the best crew on the market.

LNG tanks

Three types of tanks are available on the market: Type A, B, and C. The vacuum insulated C-type is the most commonly used.

IMO type C-tank allows for pressure build up, partial loading, easy installation and a wide range of volume per tank.

Integrated propulsion and manoeuvring system

PROMAS (Propulsion and Manoeuvring system) is an integrated propeller rudder system that offers increased propulsive efficiency without any loss in manoeuvrability. The propeller and the rudder are considered as one propulsion unit and are designed together for optimum propulsive efficiency.

The rudder design is adapted to the particular propeller design and is optimised to regain losses from the propeller slipstream, whilst the propeller design uses the presence of the rudder bulb and hubcap to recover losses behind the propeller hub.

Hybrid Shaft Generator (HSG)

The HSG is an advanced power electric system for conditioning the power coming from a shaft generator. The switchboard is supplied with a constant voltage and frequency, and the correct phase angle to match other generator sets running in parallel.

This paves the way for much more flexible use of engine and propeller speed variations to maximise both propeller and engine efficiencies by running them at their design points. Vessels with medium speed engines driving CP propellers or main thrusters through reduction gears are prime candidates for an HSG system.

Rolls-Royce gas engines

Bergen lean-burn gas engines are the cleanest and most efficient piston engines available today, and are classed for both marine propulsion applications and power generation offshore and onshore. Compared to diesel engines that meet IMO Tier 2 emission levels, Bergen gas engines give an emissions reduction of 92 per cent NOx, close to 23 per cent in CO2 and virtually eliminate SOx and particulates, already meeting IMO Tier 3 requirements that will come into force from 2016.

Switchboard

Rolls-Royce low voltage marine switchboards (up to 690V) have a simple interface to the Integrated Alarm System (IAS) and can be equipped with Power Management System (PMS) for optimized control of the power system, and Arc Fault System for enhanced personnel safety.

Other control and safety systems, which forms a part of a Rolls Royce gas-electric or hybrid propulsion system are integrated in the switchboard.

Tunnel thruster

The Rolls-Royce range of tunnel thrusters are fitted to a wide range of vessels operating in all corners of the world. The tunnel thruster is designed for giving maximum side force to the ship in manoeuvring condition. The system consists of the thruster unit with tunnel, hydraulic equipment, remote control and electrical drive motor with starter. Thrusters are available in both CP and FP versions. Three types of tunnel thrusters are available: Standard type, super silent type and the newly developed Permanent Magnet thruster.

Integrated bridge and automation system

Our new concept for ship operation workstations covers navigation, manoeuvring, dynamic positioning, anchor and deck operations and machinery control. Stations are built up from modules and a range of standardized components that meet ship owners’ individual requirements and preferences.

Functions include operation planning, execution and monitoring, and are based on clearly presented information. Crews differ in height, arm reach and other parameters, so the system allows the operator to find a comfortable position, with controls ergonomically placed and necessary information presented on touch screens. Consistency in command transfer, system operation and alarm handling enhances operational safety.

Details
Høydal
NSK Shipping
Country
Norway
Ship type
Cargo
Rolls-Royce engine scope
1 x C26:33L6PG
Details
Eidsvaag Pioneer
Eidsvaag Rederi
Country
Norway
Ship type
Cargo
Rolls-Royce engine scope
1 x C26:33L9PG
Details
Coral Methane
Anthony Veder
Country
Netherlands
Ship type
Cargo
Rolls-Royce engine scope
2 x KVGB-12G4 + 2 x B32:40L8A (MFO/HFO)
Details
Kvitbjørn
Norlines
Country
Norway
Ship type
Cargo
Rolls-Royce engine scope
1 x BL35:40L9PG
Details
Kvitnos
Norlines
Country
Norway
Ship type
Cargo
Rolls-Royce engine scope
1 x BL35:40L9PG
Details
Bergen Viking
Bergen Tankers
Country
Norway
Ship type
Cargo
Rolls-Royce engine scope
2 x C2633L6AG
Details
With Harvest
Ulvan Rederi
Country
Norway
Ship type
Cargo
Rolls-Royce engine scope
1 x C26:33L9PG
Details
With Marine
Ulvan Rederi
Country
Norway
Ship type
Cargo
Rolls-Royce engine scope
1 x C26:33L9PG
Talk to an expert
Excellence is our way of life
Oscar Kallerdahl Sindre Holmelid Håberg Kim Espen Tepstad
 
 
About Oscar Kallerdahl
Sales Manager, LNG Systems

Oscar Kallerdahl holds a M.Sc. in Mechanical Engineering and Product Development. After many years in Rolls-Royce he has covered the full range of Rolls-Royce products and gained in-depth knowledge of the core processes that drive businesses – from Customer Relations, Sales and Contract Management, to Production, Delivery and Warranty Handling.

 
 
About Sindre Holmelid Håberg
Area Sales Manager - OSV & Merchant - Engines, Commercial Marine

Sindre Holmelid Håberg started as a diesel mechanic, subsequently obtaining an engineering degree in Mechanical Engineering, specialising in reciprocating engines. Sindre’s wide-ranging knowledge enables him to provide customers with a full and complete understanding of all available options open to them, and their vessel.

 
 
About Kim Espen Tepstad
General Manager Sales, Engines

Kim Espen Tepstad has spent all his working life with marine engines, starting out with nearly 5 years on the production line, assembling and testing them. After working closely with design and engineering teams for many years, this has given him a deep understanding of all aspects of engine design.

Services
Services & aftermarket support

With our network of strategically located marine workshops spread across the globe, we can support our customers’ repair and overhaul needs wherever they are operating. Services are tailored to customer requirements, providing rapid turnarounds to meet docking schedules, while working to ISO quality standards.

Product training
Product training
24/7 technical support
24/7 technical support
Services
Services

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