Università degli Studi di Napoli "Parthenope"

Teaching schedule

Academic year: 
Belonging course: 
Course of Bachelor's Degree Programme on COMMAND AND MANAGEMENT OF A MARINE VESSEL
Disciplinary sector: 
Year of study: 
First Semester
Hours of front activity: 



Course description

Education objectives: The course aims to provide the basic concepts for understanding the phenomena that occur in an electrical distribution system.


1. Knowledge and understanding
The student must know:
- the main functions performed by an electric power system
- the basic laws and Standards on the ship electric power systems
- the structural and functional characteristics of the components of the electric power systems
- the basic criteria for designing electrical components
- the operating problems of an electrical power system.
- the principles of electrical safety

2. Applying knowledge and understanding
The student must demonstrate
- to understand the problems linked to the operation of an ship electric power system.
- to apply the criteria for the selection and sizing of the components of an electric power system.

3.Making judgments
The student must demonstrate that he has the basic knowledge for dealing and deepening in an autonomous way the issues related to the operation of an ship electrical distribution system.

4. Communication skills
The student must demonstrate the ability to easily explain to people the operation of the main components of the electric power system and the problems linked to the operation of an ship electric power system.

5. Learning skills
The student must be able to update information about electric power systems through texts and publications relating to the field of electric power systems in order to acquire the ability to undertake further courses, specialized seminars and to be able to undertake further studies on the ship electric power systems




The principles of electrical systems (3 h - 0,4 CFU)
The circuit model: ideal circuit elements, voltage and current. Kirchhoff’s laws. Linear resistive circuits: series and parallel equivalence, superposition principle. Linear circuits in DC and AC steady state. Complex power, active power, reactive power, and conservation properties.
Introduction to ship electrical power systems (M.4-M.5 – 6 h - 0,75 CFU)
Electric system concept for terrestrial and on-board installations ; characteristics of ship electric power systems; frequency and voltage in ship installations; classification of electrical systems on board; electric balance.
The main Standards for ship electrical installations.
Diagrams of electric power systems (M.8 – 2 h - 0,25 CFU)
Definitions and classifications, graphic symbols, examples of diagrams of electric power system
Production and distribution of electrical energy (M1-M2 - 16h - 2 CFU)
Power supply sources: independent generators, shore connection on board installation, electrochemical battery. On board generators. Damages and maintenance
Shipboard Electrical Distribution systems (radial configuration, loop configuration, etc).
Cable lines: construction characteristics, voltage drop, current rating.
Network connection: Converters and transformers
Main electrical loads (M.3 – 5 h - 0,6 CFU)
DC and AC motors, appliances and lights, electric drives
Over-currents and protection systems (M7 – 10 h - 1,25 CFU)
Abnormal operating conditions of an electrical power system.
Switches, fuses, relays, protection systems.
Simplified method for the short-circuit current calculation.
Choice of protection system against overload and short circuit current
Principles of Electrical safety (M6 – 6 h - 0,75 CFU)
Effect of current on the human body. Protection against direct and indirect contact

The course provides the basic elements to understand the operation of a ship electrical power system.
The constructive and functional characteristics of the main electrical components are analysed; the normal and abnormal operating conditions of the on-board electrical power system are examined with particular attention to the description of the control and protection systems. Finally, the main problems concerning the electrical safety are also addressed.
The course furnishes some competencies required by the STCW Convention, as amended, for Deck Officers and Marine Engineers at Operational Level, embodied in the MIT decree dated 19th December 2016, namely “Percorso formativo per accedere alle figure professionali di Allievo Ufficiale di Macchina”.
Particularly, the course furnishes the following competencies, listed in the Attachment I of the above-mentioned decree, for Marine Engineer Cadets:

M1: Electric generators and distribution systems (12h)
M2: Connection, disconnection and parallel of electric generators on the network (4h)
M3: Electric motors and starting devices (5h)
M4 :HV installations (3h)
M5: Sequential control circuits (3h)
M6: Insulation of electrical equipment and safety requirements for working on on-board electrical systems (6h)
M7: Failure of electrical systems and methods of prevention (10h)
M8: Basic electrical schemes (2h)

Teaching Methods

Teaching activity is organized with on line course using Microsoft Teams platform.
The course code is 3pz308u


The teaching material consists of:
- Reference books in Italian and English;
- Technical Rules;
- Notes provided by the teacher

Learning assessment

The exam consists of verifying the achievement of the previously defined educational goals, by an oral examination during which students shall discuss several plant schemes of existing ships, to evaluate the autonomous capacity of reading and comprehension.

More information

Time Table
Information about the time table for student interaction are at the following link

Lectures are in Italian. The professor is fluent in English and is available to interact with students in English, also during the examination.