Predictions of added resistance and effective power of ships were made for varying barnacle fouling conditions. A series of towing tests were carried out using flat plates covered with artificial barnacles. The tests were designed to allow the examination of the effects of barnacle height and percentage coverage on the resistance and effective power of ships. The drag coefficients and roughness function values were evaluated for the flat plates. Roughness effects of the fouling conditions on the ship frictional resistances were predicted. Added resistance diagrams were then plotted using these predictions, and powering penalties for these ships were calculated using the generated diagrams. The results indicate that the effect of barnacle size is significant, since a 10% coverage of barnacles each 5mm in height causes a similar level of added power requirements to a 50% coverage of barnacles each 1.25 mm in height.
This dataset contains figures showing the digital model of 3D printed barnacles, frictional resistance coefficients of the test plates, percentage increases in the frictional resistance and effective power of ships due to biofouling, and added resistance diagrams for these ships.