Resistance Tests of a Series Planning Hull Forms with 30 Degrees Deadrise Angle,and a Calculation Model Based on This and Similar Systematic Series

摘要

In addition to the well known systematic series planing hull forms with adeadrise angle of 12.5 degrees as presented by Clement and Blount (DTMB), and a similar series by Keuning and Gerritsma, in the paper the results of the tests on a 30 degrees deadrise series are presented. The combined data of these three series are fitted to a regression model for total resistance, trim and rise of center of gravity. This regression model is verified by a comparison with existing model data. Although in general the calculations show good agreement with experiments, the need for additional data for a deadrise angle between 12.5 and 25 degrees became obvious. Additional resistance test results of two models with varying deadrise and rising buttock lines in the aft part of the hull are presented. Regression of these data results in simple expressions to take these effects into account.