OVERVIEW

The course "Impianti Navali" was created in AA 16/17 and incorporated the previous teachings of "Impianti di Propulsione Navale" and "Impianti e Allestimento Navale". The course consists of a first part (40 hours) focused on propulsion systems, and a second part (20 hours) focused on auxiliary system, including ER auxiliaries, hull, and safety systems. The teaching has strong design and application characterization.

AIMS AND CONTENT

LEARNING OUTCOMES

The student will have an overall picture of Design principles of ship propulsion plants, ship auxiliary plants and ship safety plants.

AIMS AND LEARNING OUTCOMES

The course aims to present the basics of the design and operation of propulsion and auxiliary systems for the most common types of Ships. It provides a basic understanding of ship propulsion systems for the most common types of ships (cargo, passenger, military, offshore) through analysis of the various components, in particular prime movers, power transmission systems, thrusters. Moreover, it provides a basic understanding of ship systems with special reference to propulsion auxiliary systems, ship safety systems, and major hull systems. Eventually, it provides the basis for safe operation of the described systems, and the skills to understand and apply the most relevant regulations (classification rules, SOLAS, MARPOL).

At the end of the course, the student will be able to describe and understand the operation of a ship propulsion plant and auxiliary system, and to carry out a preliminary design respecting the applicable regulations.

In particular, the student will be able to:

    - understand the main issues related to ship propulsion and auxiliary plant in relation to requirements;

    - understand and correctly read technical documents, design guides, and regulations applicable to ship propulsion and shipboard installations;

    - apply acquired knowledge to solve problems related to the design and operation of ship installations;

    - express themselves using both Italian and English technical language to communicate clearly and effectively with specialists and non-specialists;

    - effectively interpret graphs, diagrams and technical drawings, and use them to express themselves.

    - study independently the main topics addressed by the course, especially in function of the unavoidable need for continuous updating that the discipline requires.

PREREQUISITES

Knowledge of thermodynamics, technical physics, thermal and electrical machines, naval architecture and hydrodynamics is essential for understanding the teaching content.

TEACHING METHODS

Teaching will consist of lectures, classroom exercises with debriefing and discussion, and educational visits. During lectures, extensive use will be made of technical documents, project guides and regulations in order to develop the skills of critical reading, comprehension and application of English-language technical texts in the design field.

SYLLABUS/CONTENT

1. Generalities about ship propulsion systems
   • Purpose, design criteria, operating profile concept
   • Main elements (engine, transmission, propeller), main types of machinery installed
   • Configurations typically used in real applications
   • Safe Return to Port
2. Methods for power prediction
   • The admiralty formula
   • The efficiency chain
   • Power prediction
   • Nominal cubic law method
3. Diesel engines
   • Recalls on 4 stroke and 2 stroke Diesel internal combustion engines.
   • Exhaust gas turbocharging.
   • Fuel injection
   • Power expressions
   • Load diagrams of diesel engines
   • Catalog examples
4. Propeller-engine matching with fixed pitch propeller
   • Sea margin and engine margin
   • Choice of 2 stroke and 4 stroke engine.
   • Evaluation of performance, fuel consumption, and range
5. Propulsion systems with controllable pitch propellers
   • Pitch movement mechanism
   • CPP open water propellers
   • Propeller-engine matching with CPP
6. Unconventional propulsion systems
   • Gas turbines for ship propulsion
   • Electric motors for ship propulsion
   • Combined systems, hybrid systems and electric propulsion
7. Marine fuels
   • Main physical characteristics
   • Technical and ISO classification 
   • Calculation of pollutant emissions
   • Intro to alternative fuels.
8. Energy efficiency
   • Rationale and regulatory framework
   • Technologies for reducing emissions.
9. The shaft line
   • Main components, structural model and loads
   • Sizing with direct calculation
   • Rule formulations
10. The design of ship auxiliary systems
    • Purpose, classification and main systems (auxiliary AM, safety, hull)
    • Principle diagrams, functional diagrams, detail diagrams
    • Engine room layout and machinery arrangement
    • Regulatory framework of ship auxiliary systems
11. The sizing of ship auxiliary systems
    • Fundamental physical principles (Continuity equation, Energy equation, Bernoulli's theorem)
    • Sizing a pump: head calculation, pump-circuit matching, cavitation verification.
    • Hints on sizing of heat exchangers, piping and pressure vessels.
12. AM auxiliary systems
    • Cooling system
    • Fuel system
    • Engine room ventilation
13. Safety systems
    • Safety bilge system
    • Passive fire protection
    • Fire system
    • Fixed CO2 system
    • Notes on other fire protection systems.
14. Hull systems
    • Ballast system
    • Rudder system

RECOMMENDED READING/BIBLIOGRAPHY

Material provided by the lecturer on the aulaweb, including notes, course handouts, extracts from standards, project guides and component catalogues.

TEACHERS AND EXAM BOARD

Exam Board

RAPHAEL ZACCONE (President)

SILVIA DONNARUMMA

BRUNO SPANGHERO

MASSIMO FIGARI (President Substitute)

LESSONS

LESSONS START

https://corsi.unige.it/8722/p/studenti-orario

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

• Written project-based test lasting 2-3 hours (Limited to COVID-19 emergency: online, under standard conditions in presence). Admission to the oral examination with a minimum mark of 16/30.

• Oral examination consisting of 2 questions on the course programme (15'). In order to pass the exam, both the oral answers need to be sufficient.

ASSESSMENT METHODS

The written examination, with a strong design characterization, aims to verify the candidate's ability to solve design problems of relevant complexity, integrating information from different sources, including their own notes, the examination text, catalogs, experimental test results, regulations and manuals, in order to synthesize a solution, assuming missing data and resolving ambiguities, motivating and arguing the choices adopted.

The oral interview aims to test the student's ability to argue about the topics learned, to illustrate their more conceptual and theoretical aspects, as well as to solve practical problems by quickly making and adequately motivating realistic, albeit approximate, quantitative evaluations in the absence of data and computational tools.

Exam schedule