An approximate method for calculation of resistance and trim of the planing hulls

Radojčić, D. (1985) An approximate method for calculation of resistance and trim of the planing hulls. Southampton, UK, University of Southampton, 30pp. (Ship Science Reports, 23).


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A mathematical model is presented for predicting the resistance and trim angle of bare stepless planing hulls in calm water. Volume Froude numbers covered are 1 to 3.5 for resistance and 1 to 4 for trim angle. The predictive technique is established by regression analysis of data of systematic Series 62 (with deadrise angle of 12.5° and 25°) and Series 65. The mathematical model is a function of four hull form and loading parameters [loading coefficient (area coefficient), ratio of length to beam, longitudinal center of gravity location, deadrise angle] and section shape. The method presented makes it possible to estimate the resistance of planing hulls in the early stage of design and is suitable for programming.

Item Type: Monograph (Technical Report)
Additional Information: This paper was submitted to the SNAME Symposium on Powerboats - Recreational and Commercial, Miami, 19th and 20th February 1985.
Subjects: V Naval Science > V Naval Science (General)
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions : University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 43587
Accepted Date and Publication Date:
Date Deposited: 25 Jan 2007
Last Modified: 29 Sep 2015 15:03

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