The goal of energy audits is to identify and analyze how energy is generated and used in the ship in order to make suggestions for improvements that reduce fuel consumption. Through an energy audit it is possible to quantify exactly the consumption profile of the vessel and the potential for improvement in each field. The energy balance in a typical ship normally involves a propulsion engine as a primary consumer and secondary consumer, auxiliary groups, as being multiple combinations of drive solutions from the power plant and ancillary equipment (shaft generators, hydraulics, etc.). While the primary consumer is the engine of the ship, we must not forget that this engine uses energy in powering propeller, which in turn, must overcome the resistance of the hull and interact with it and its appendages (nozzle, rudder, etc.). That is why it is essential to focus the audit not only as a collection of data but a detailed analysis which also assess the hydrodynamics of the ship. There are small low-cost actions (such as new designs of bulbs, keels, stern flaps, flaps, nozzles, rudders, etc.) that improve the performance of the vessels significantly. Small investments can lead to big savings over the medium term. There is also command and control technology that can improve the generation and usage of electric power onboard.
There are several possibilities for data collection on board, which includes records of power consumption, speed, usage profile of the ship, etc.
- Installing permanent or temporary data acquisition
- Measurement onboard by VICUSdt staff, in several conditions.
- Data collection by the crew.
Hydrodynamic analysis of the hull, rudder and propeller / nozzle
Design goodness and potential improvement for each solution is evaluated
Data analysis, reports and recommendations
Proposing solutions, anticipated savings, costs study and return of investment
Advantages for ship owner
- Immediate Fuel Savings derived from knowledge of consumption profile detecting inefficient work conditions and avoiding malpractice.
- Identification of possible engine problems (excessive consumption, poor combustion, etc.).
- Characterization of the entire ship hydrodynamics (main energy consumer)
EEDI and EEOI verification
Our team of experienced naval architects can carry out EEDI and EEOI assessment and verification. We can take care of all the steps necessary to achieve the required EEDI from concept stage to sea trials. Also ask us for help on existing vessels, the combination of naval architecture capabilities, hydrodynamics experts and sea trial “hands-on” experience is the perfect approach for a successful project.
As independent experts we can cooperate with flag state authorities and classification societies.
Ship performance simulator
SHIPERTOOLS® is a tool developed by VICUSdt that is able to evaluate ship performance in different scenarios, operational profiles and technology combinations. This tool is capable of evaluating different machinery configurations in each scenario. SHIPERTOOLS can be used during the preliminary ship design or in an optimization based on operations .This tool is suitable for new projects and for retrofitting:
- Incorporates basic hydrodynamic and propulsion data
- Includes DP capability plot and maneuvering simulator
- Is flexible and customizable for each project
- Includes probabilistic weather analysis
This approach is especially useful during the ship concept development stage or for evaluation of new technologies, in order to assess accurately the best combination of solutions based on the real ship operational profile.
As a result of this type of analysis you can obtain the following results:
- Total fuel / energy consumption per machine over a certain period of time.
- Average and peak efficiency of different ship systems.
- Transport efficiency and EEDI analysis.
- Ship performance in different operational scenarios and different technologies.