Technology Groups
Definitions of maturity levels according to uptake across the maritime industry, and degree of proven technology/principle
Mature
Proven, new or existing technology/principle, with high uptake across the industry.
Semi-mature
Proven, new or existing technology/principle, but with limited uptake across the industry.
Not mature
New unproven-, unproven existing- , or proven existing technology/principle but with very few installations and little to no operational experience.
MACHINERY TECHNOLOGIES
Optimizing auxiliary systems to actual operational profiles, not design conditions
Semi-mature
All vessels
De-rating an engine for reduction of the vessel's maximum speed to increase its efficiency by limiting the potential power output
Semi-mature
Vessels sailing 10-15% slower than design speed
Automatic increase of engine efficiency through testing and tuning according to actual operational load and conditions
Semi-mature
Mainly for two stroke engines
Manual increase of engine efficiency through testing and tuning according to actual operational load and conditions
Mature
All vessels
Exhaust gas boilers recover the heat from the exhaust gas of auxiliary engines to generate steam, hot water or heat for process heating
Semi-mature
Vessels without shaft generator
Use of electricity to replace various modes of power consumption
Semi-mature
Vessels with large fluctuations in power output (ferries, offshore vessels, tugs)
Increase of the auxiliary engines' load and efficiency by reducing the number of auxiliary engines running
Semi-mature
All vessels
Produce electricity from the main propulsion engine
Mature
All vessels with high power needs and long transits
Use of cold ironing in ports to reduce fuel consumption on power producing engines
Semi-mature
For smaller vessels and in ports with developed solutions for larger vessels
Improve operations and maintenance of steam plant system saving fuel on oil fired boiler
Mature
Mainly crude and product tankers
Recover thermal energy from the exhaust gas and convert it into electrical energy
Semi-mature
All vessels with engines above 10 MW
PROPULSION AND HULL IMPROVEMENTS
Use of air injection on the wetted hull surfaces to improve a ship’s hydrodynamic performance
Semi-mature
Most vessels in deep sea trade
Removal of fouling on the hull to increase the vessel's hydrodynamic performance
Mature
All vessels
Reduction of the hull's resistance through water
Mature
All vessels
Optimizing the hull for lower resistance through water
Mature
All vessels
Retrofitting of the bulbous bow, optimizing thruster tunnels or bilge keel to reduce resistance
Mature
All vessels
Removal of fouling on the propeller
Mature
All vessels
Retrofitting the propeller to increase efficiency
Semi-mature
All vessels
Installation of propulsion improving devices
Mature
All vessels
ENERGY CONSUMERS
Reduction of energy consumption while discharging crude oil by use of model-based studies of the discharge operation
Semi-mature
Tankers
Use of energy efficient lighting equipment, such as LED light, to increase efficiency and remove heat loss from light devices
Mature
All vessels
Regulating the frequency of the motors in order to adapt the motor optimized load
Mature
All vessels
ENERGY RECOVERY
Use sails or wings to replace some of the propulsion power needed
Not mature
Vessels with enough place on deck (general cargo, tankers, bulkers)
Use Flettner rotors to generate power from wind energy
Not mature
Dependent on trading area and sufficient free deck-surface
Use a kite to replace some of the propulsion power needed
Not mature
All vessels
Install solar panels for conversion of solar energy to electricity
Not mature
Dependent on trading area and sufficient free deck-surface
TECHNICAL SOLUTIONS FOR OPTIMIZING OPERATION
Use of an automatic system to control the vessel's rudder in a more energy efficient manner
Mature
All vessels
Use of optimized pitch settings and propeller speed for optimized efficiency of propulsion system
Mature
For vessels with controllable pitch propeller
Optimize the operation in DP mode
Semi-mature
Vessels with DP mode
Management of the vessel's speed in the most efficient manner
Semi-mature
All vessels
Optimizing the trim and draft to reduce the vessel's water resistance
Semi-mature
All vessels
Including weather conditions when planning a voyage
Mature
All vessels
This Energy Efficiency Technologies Information Portal was developed in cooperation with DNV GL.
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