B6361 - Hydrostatic

Learning outcomes

The main objective of the course is to provide the student with the theoretical physical-mathematical bases and the tools necessary for the evaluation and the analysis of the equilibrium of a vessel, even in particular applications, such as during the loading and the unloading of a goods, movement of a weight, etc. At the end of the course the student will be able to evaluate the geometric characteristics of a hull, as well as set and solve the problem of the balance of the system of forces made up of the weight and the Archimedean force, with particular attention to the nature of the equilibrium.

Course contents

1. DEFINITIONS (principal dimensions of a ship, definition of the hull surface, coefficients of form, international and national regulatory bodies).

2. QUADRATURE RULES (approximate integration, trapezoidal rule, Simpson’s rules, other rules, relative accuracy of rules).

3. FLOATING BODIES (equilibrium, metacenter, metacentric diagrams, trim, hydrostatic curves, problems in trim, transverse weight movements).

4. RESISTANCE (types of resistance, calculation of resistance, roughness, resistance in shallow water, form parameters and resistance, the ITTC performance prediction method, ship trials).

5. PROPULSION (power and efficiency, presentation of propeller data, hull efficiency elements, the IITC performance prediction method, cavitation, ship trial).

6. WAVES (the ocean environment, regular and irregular waves, freak waves).

7. INTACT STABILITY (definition, stability at small angles, special cases in stability, stability at large angles, weight movements, influence of external factors, stability standards for the intact ship, IMO criteria).

8. DEMAGED STABILITY (flooding and damaged stability, stability in the damaged state, stability standards for the damaged ship).

9. LAUNCHING, DOCKING AND GROUNDING

Readings/Bibliography

Tupper CT. Introduction to Naval Architecture (Fifth Edition). Butterworth-Heinemann; 2013. ISBN: 9780080982373.

Biran AB and López-Pulido R. Ship Hydrostatics and Stability (Second Edition). Butterworth-Heinemann; 2013. ISBN: 9780080982878.

Molland AF, Turnock SR, Hudson DA. Ship Resistance and Propulsion: Practical Estimation of Propulsive Power. Cambridge University Press; 2011. ISBN: 9781107142060.

Lecture notes provided by the Lecturers

Teaching methods

Lectures and frontal exercises held by the Lecturers. During the course, seminars could be organized held by highly qualified personnel and regarding technological aspects of the course. The topics of the seminars held will form an integral part of the program and may be subject to verification during the exam.

Assessment methods

The assessment will take place through an oral examination in which the student must demonstrate sufficient skills of the topics presented in class and be able to summarize the knowledge gained. The student must demonstrate sufficient preparation in each of the required topics. The final grade will be assigned by the committee based on the overall preparation demonstrated.

Teaching tools

Whiteboard /blackboard and PowerPoint presentations.

Office hours

See the website of Ignazio Maria Viola

See the website of Riccardo Broglia