OVERVIEW

During the lectures of Marine Engineering A, the principles of operations and the design techniques for both marine propulsion plants and auxiliary systems will be illustrated. The rules leading the certification process will be analysed with some practical examples.

AIMS AND CONTENT

LEARNING OUTCOMES

The course aims at providing students with the tools for a qualified design, from a technical standpoint and legal , facilities related to the propulsion of ships .

AIMS AND LEARNING OUTCOMES

The course aims to provide students with the tools to analyse regulatory references, design, and layout pleasure craft propulsion and auxiliary systems for private use.

PREREQUISITES

Basic knowledge of physics, thermodynamics and hydrodynamics. Basic knowledge of the principles of naval architecture.

TEACHING METHODS

Classroom lectures and exercises.

SYLLABUS/CONTENT

Ship Propulsion Plant 

1. Propulsion Plant. Introduction. Main components. Prime Engine. Propulsion Chain transmission. Propulsor. Design Aspects.
2. Prime Engine Classification. Diesel Engine Technical Characteristic. Application in the function of ship types.
3. Propulsors Classification. Range of application in function of propulsion layout and ship speed. Pros and Cons of a different solution.
4. Chain propulsive. Power chain and Propulsive efficiencies.
5. Engine Technical Characteristics. Working principles of 2T and 4T Engine. Common Rail. Engine Diagram. Power Ratings.
6. Ship Engine Fuel. Types and characteristics of marine fuels. Attention will be paid to pollution aspects.    
7. Engine Margin and Service Margin. Engine margin and Service margin principle. Methodology to choose the prime mover engine.
8. Engine operation prediction with fixed blade propeller. Procedure for calculating propulsion equilibrium points. Autonomy calculation. Propeller “ideal” power request.
9. Energy Efficiency. Propulsion energy efficiency, evaluation and solution for enhanced
10. Gear-Box. Working principles, the procedure for choosing the gearbox. Trolling mode. Gear wheel sizing.
11. Thrust Bearing. Purposes and principle of operation.
12. Transmission Line. Transmission Lines, bearings, thrust bearings, stern-tube, loads acting on the shaft. Drawing and sizing.
13. Propulsion system Schematics. Propulsion systems and engine room general layouts. Diesel-Electric Hybrid System.
14. Exercises. Numerical exercises: propeller-engine matching, gearbox selection, shaft line diameter evaluation.

Ship Auxiliary Systems

1. Introduction. System design criteria. Regulations. Classification of systems. Bernoulli's theorem. Request head calculation.
2. Pump characteristics. Pumps operations in series. Pumps operations in parallel. Matching pump-circuit. Required Power Calculation. Energy Consumption.
3. System Components. Valves Types. Filters Types. Pipe Sizing.
4. Bilge System. Operation, components, drawing in the three views, ISO standards, sizing and choice of components.
5. Fire Fighting. Regulations, notes on fire extinguishing methods, active and passive protection.
6. Fuel System. Operation, components, drawing in the three views, standards, sizing and design choices.
7. Fresh water System. Overview, components, autoclave details, one-line diagrams
8. Black Water system. Purpose and operation, regulations, components, one-line diagrams, sizing.
9. Grey Water System. Purpose and operation, gravity grey-water system, vacuum grey-water system, components, drawing layout, installation solutions, sizing.
10. Sea Water System. Overview, drawings, regulations, sizing.
11. Ventilation System. Overview, purposes, components, one-line diagrams, plant solutions, sizing.
12. Exhaust System. Overview, purposes, noise attenuation, muffler, separator, submerged exhaust outboards, plant solutions, drawings, back-pressure evaluation.
13. Bow and Stern Thruster. Characteristics, designs, types, equilibrium of moments, sizing, bollard pull functioning, and selection from the catalogue.
14. Wheelhouse. Operating principles, definitions, types of rudders, sizing using regulations.
15. Exercises. Numerical exercises: Calculate the head required by the circuit and calculate pipe thicknesses.

The program may be modified during the course

RECOMMENDED READING/BIBLIOGRAPHY

All the slides used during the lectures and other teaching material will be available on aul@web. In general, the notes taken during the lectures and the material on aul@web are sufficient for exam preparation. 

TEACHERS AND EXAM BOARD

Exam Board

CAMILLA FRUZZETTI (President)

MASSIMO FIGARI

MICHELE MARTELLI

BRUNO SPANGHERO (President Substitute)

LESSONS

LESSONS START

According to lecture calendar.

Class schedule

MARINE ENGINEERING A

EXAMS

EXAM DESCRIPTION

The examination consists of a written test, the passing of which is indispensable for admission to the oral interview. The oral test will consist of open questions on the course programme.

ASSESSMENT METHODS

The written exam will verify the effective understanding of the topics discussed and the ability to design a generic propulsion plant or systems independently. Correct plant dimensioning is a necessary condition for taking the oral examination.

During the oral examination, the quality of the exposure, the correct use of the specialised vocabulary, and the capacity for critical reasoning on the topics covered during the module will be evaluated.

Exam schedule

FURTHER INFORMATION

Ask the professor for other information not included in the teaching schedule