Einfluss der Heckgestaltung auf des Manoevrierverhalten seegehender Frachtschiffe. T. 1 Abschlussbericht

Comprehensive investigations were carried out in cooperation with the university of Rostock to predict the influence of after body related to manoeuverability of containerships, especially to dynamical course stability. Several changes of the stern were fulfilled for a given containership. The influence of that variants on the manoeuverability was established. For that reason manoeuver test with free running models as well as measurements of forces and moments with fixed models were accomplished. The external forces predicted in such a way were used as the base for calculation of manoeuverability by means of computer programs. A new system for prediction of the coordinates of the centre of gravity of the ship during a measuring run was developed. The investigations have shown, that a containership tends to a course instability, and that the course stability makes worse in the case of decreasing speed. A bulb at the stern results in an unfavourable course stability. Nearly the same tendency will be produced by an asymmetrical after body. There are appreciable improvements due to an arrangement of a deadwood below. But an inprovement will not be obtained in the case of a deadwood above the propeller. (orig.)SIGLEAvailable from TIB Hannover: RR 7236(2094)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany); Ministerium fuer Wirtschaft, Mittelstand und Technologie des Landes Brandenburg, Potsdam (Germany); Neptun Industrie GmbH, Rostock (Germany)DEGerman