Hydrodynamic Characteristics for Catamaran Floatplane in Taxiing Conditions

Catamaran floatplane is a promising mode of transportation for tourists in archipelago areas such as Indonesia, which operates from one coast to another. Therefore, the objective of this research is to evaluate floatplane variations of hull separation and hull length (S/L), which include 0.40, 0.43, 0.46, and 0.49, to understand the performance boundaries concerning resistance, stability, motion, and comfort during taxiing at speeds of 20 and 40 knots. The increase in speed raised the floatplane's resistance, with a significant growth in hump drag between 8-10 knots due to the interaction of two catamaran floater hulls. Stability has been analyzed in accordance with the righting arm (GZ) and heel angle, and the highest value has been found in the fourth floatplane model. Additionally, as the deck immersion angle has increased, the heel has risen, affecting the movement of the floatplane. The heave motion and roll motion of floatplane analyzed at different wave headings have showed a weak reaction to beam sea. Comfort boundary analysis has illustrated that floatplane has operated comfortably for 30 minutes at certain wave heights and directions. Overall, simulation provides insights into resistance, stability, and motion characteristics of floatplanes. The results from this simulation serve as a crucial preliminary investigation to delve into a comprehensive analysis of floatplane performance.