Experimental Research Relative to Improving the Hydrodynamic Performance of Ocean-Going Tug/Barge Systems. Phase II. Experimental Evaluation of Concept Designs. Part B. Seaworthiness Experiments. (Concepts I and II).

摘要

This report presents the results of seaworthiness experiments conducted with two tug/barge concepts. Concept 1consists of a tug and barge coupled together to form a rigid body and Concept 2permits only relative pitch freedom. Theoretical predictions of Concept 2responses are also presented. Some of the more important results of the investigation are: (a) The longitudinal acceleration of the tug pilot house and longitudinal pin force increased considerably,while the vertical pin force showed considerable decrease for Concept 2. (b) The relative pitch freedom of Concept 2permitted more effective propeller and rudder operation. (c) There is good agreement between linear theory predictions and experimental data for Concept 2.