OVERVIEW

The course deals with the problem of ship controllability.

The different approaches for the assessment of ship manoeuvrability characteristics will be covered, introducing the basic equation of motion and considering experimental and numerical approaches.

Current IMO requirements will be presented, together with the standard manoeuvres adopted for the assessment of ship manoeuvrability.

AIMS AND CONTENT

LEARNING OUTCOMES

Definition of the basic motion equations and of the hydrodynamic characteristics which affect the ship behaviour in terms of manoeuvrability.

AIMS AND LEARNING OUTCOMES

At the end of the course the student will be able to:

- Understand the issues related to ship manoeuvrability (manoeuvrability prediction, design of control means), knowing the effects of the different elements (hull, appendages, propulsion systems, control means, mutual interactions);

- Apply the notions described above for the design of the ship from the point of view of maneouvrability

- Analyze issues related to the maneuverability of the vessel, identifying deficiencies 

- Identify solutions in order to solve the above-mentioned issues

- Understand manoeuvring simulators developed in Matlab/Simulink environment

- Develop simplified parts of manoeuvring simulators in Matlab / Simulink environment

PREREQUISITES

The student is expected to have already acquired the fundamentals of naval architecture.

TEACHING METHODS

The course consists of lectures in presence for the theoretical part (about 50 h) and classworks in the computer lab (about 10 h). In the classworks a simplified manoeuvrability simulator will be developed first in Excel and then in Simulink

Students with valid certifications for Specific Learning Disorders (SLDs), disabilities or other educational needs are invited to contact the teacher and the School's disability liaison at the beginning of teaching to agree on possible teaching arrangements that, while respecting the teaching objectives, take into account individual learning patterns

SYLLABUS/CONTENT

Governing equations

Straight line / Directional / Positional stability

Manoeuvring characteristics and standard manoeuvres

Existing rules

     IMO (requirements, Pilot card, Wheelhouse poster, Manoeuvring booklet)

     NATO (ANEP – STANAG) - RINAMIL

Model tests

    Free running model tests

    Captive model tests

Non linear equations

     SNAME Model

     MMG Model

     Regressions

Steering devices

           Rudder (open water)

           Rudder (interaction effects)     

           Rudder design

           Alternative (active) steering devices (Azipod, WJ, etc)

Appendages effects

Short introduction to system Identification

Speed variation

Slow speed manoeuvrability

Manoeuvrability in shallow and restricted waters

Short introduction to direct numerical calculations (CFD)

The course contributes to the achievement of the Sustainable Development Goal 14 of the UN 2030 Agenda ( Conserve and sustainably use the oceans, seas and marine resources for sustainable development)

RECOMMENDED READING/BIBLIOGRAPHY

Notes of the lecturer

Principles of Naval Architecture (PNA) Vol.3

TEACHERS AND EXAM BOARD

Exam Board

MICHELE VIVIANI (President)

DIEGO VILLA

BENEDETTO PIAGGIO (President Substitute)

LESSONS

LESSONS START

https://corsi.unige.it/corsi/8738/studenti-orario

https://easyacademy.unige.it/portalestudenti/

EXAMS

EXAM DESCRIPTION

The student will be evaluated by means of an oral examination on all the course program. There are three exams in summer (June, July, September) and two in winter (January and February), plus some additional exams during year to be agreed with the professor.

The exam will regard coursework had during the lectures and theory (usually two questions).

ASSESSMENT METHODS

The exam is carried out by means of an oral interview. 

The first part consists in the verification of the results of the coursework carried out during the year, in order to verify the understanding of the methods to develop a manoeuvrability simulator.

Subsequently the exam is made up of two/three specific questions to verify the understanding of the issues related to the ship manoeuvrability and the effects of the various elements involved, with application of these topics to the ship design from the manoeuvrability point of view.
During the exam, attention will also be given to the communication skills in order to ensure full acquisition of the correct vocabulary.

Exam schedule

FURTHER INFORMATION

The students have to sign up for the exams via the online website.

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