LEARNING OUTCOMES

This units aims to complete the student skills in the naval architecture field through the study of advanced topics specifically concerning the preliminary phase of the design.

AIMS AND LEARNING OUTCOMES

This unit aims to complete the student skills in the naval architecture field through the study of topics relevant to high speed craft, namely planing hull forms and surface piercing propellers.

TEACHING METHODS

Tranditional lectures (about 46 hours) and practical excercise on the Savitsky method (about 6 hours).

SYLLABUS/CONTENT

Definition of planing.

Resistance components of a planing craft.

Influence of the hull geometrical parameters on motion resistance.

Methods for the trim control of crafts.

Stepped hulls

Methods for the resistance prediction of a planing hull: systematic series, statistical methods, Savitsky method.

Cavitation and supercavitating propellers

Surface piercing propellers

RECOMMENDED READING/BIBLIOGRAPHY

Lecture notes are available on the website:

https://ingsp.aulaweb.unige.it/

The following texts are suggested for further readings:

Principles of Naval Architecture, SNAME, 1988

SAVITSKY D. “Hydrodynamic Design of Planing Hulls”, Marine Technology, October 1964.

Blount D. L., Fox D.L. “Small Craft Power Prediction”, Marine Technology, Vol. 13, No. 1, Jan 1976.

Savitsky D., Brown P.W. “Procedures for Hydrodynamic Evaluation of Planing Hulls in Smooth and Rough Water”, SNAME, Hampton Road Section paper, November 1975.

Hadler J.B. “The Prediction of Power Performance on Planing Craft”, SNAME Transactions, 1966.

Faltinsen, O.. “Hydrodynamics of High-Speed Marine Vehicles.” (2006).

Savitsky, D., Morabito, M. "Surface Wave Contours Associated With the Forebody Wake of Stepped Planing Hulls." Marine Technology. 47. 1-16, (2010).

Gawn, R.W.L., Burrill, L.C. "Effect of cavitation on the performance of a series of 16 in. model propellers." Trans. RINA, 1957.

Newton, R.N., Rader, H.P. "Performance data of propellers for high speed craft." Trans. RINA, 103, 1961.