- Specify the processes for preparing vessels to carry out vessel maintenance work. - Analyze the prevention and security measures regarding the actions of handling facilities and equipment, contained in the security plans of companies in the sector. - Apply the safety plan by analyzing the company's prevention, safety and environmental protection measures. - Apply the company's environmental protection and waste recycling measures. - Prevent occupational and environmental risks involved in the maintenance and installation operations of distribution systems and electrical current circuits and specify the applicable standards. - Explain the most relevant functions, laws, rules of electricity and its effects, applicable to electrical-electronic systems for power supply, governance, lighting and signaling of vessels. - Apply techniques for locating and diagnosing breakdowns and dysfunctions in the electrical-electronic systems of power, steering, lighting and signaling of vessels, using the necessary equipment and means, identifying the causes that originate them and relating the different repair alternatives. - Carry out maintenance and installation operations of the electrical-electronic systems for power supply, steering, lighting and signaling of vessels, using the necessary equipment and means and applying the required techniques. - Apply techniques for locating and diagnosing breakdowns and malfunctions in the panels of protection, command and switching elements of the power and lighting circuits of vessels, using the necessary equipment and means, identifying the causes that originate them and relating the different repair alternatives. - Carry out maintenance and installation operations on the protection, command and switching element panels of the power and lighting circuits of vessels, using the necessary equipment and means and applying the required techniques.