Experimental study of the influence of catamaran parameters on water resistance

The advantages of multihulls over monohulls are better running characteristics at high speeds and a larger deck area, which is critical for passenger ships. When designing, it necessary to choose geometric parameters, include the distance between hulls. A brief description existing methods calculating towing resistance multihull vessels provided in paper. New results an experimental study effect transverse clearance ratio one hull width draft on displacement catamaran also provided. studies carried out by testing small non-self-propelled model vessel tank. length 1.84 m; 0.15 varies from 0.07 m 0.11 m. experiment tank Admiral Makarov State University Maritime Inland Shipping. processed according Froude method without taking into account dynamic heel they presented as dependence residual coefficients number. By approximating data, expression allowing evaluating influence these parameters value range numbers 0.30–0.70 obtained. One tested two values same speed range. These data not approximated, but paper form experimentally obtained points. work can be used initial stages designing catamarans studying factors resistance.