One of the design challenges faced by naval architects is the accurate prediction of hull resistance characteristics in order to predict precisely the power requirements. Even though a considerable amount of research has been carried out in this area, there remains a degree of uncertainty in the prediction of calm-water resistance of catamaran hull forms. This paper attempts to report on an experimental investigation into a systematic series of slender catamaran hulls. The model hull forms comprise a conventional catamaran along with laterally separated and longitudinally staggered (longitudinal shift between demihulls) demihull (hulls which make up the catamaran) configurations for both symmetrical and asymmetrical hulls. A series of tests on the models were conducted at the Towing Tank of the Indonesia Hydrodynamic Laboratory over a speed range corresponding to Froude number up to 0.7. Experimental results are presented in tabular and graphical forms. The drag characteristics and interference effects are discussed and compared with recently published information. Results presented in this paper offer practical information and considerable promise and it is envisaged that further work will be carried out in order to gain further understanding.

Original languageEnglish
Pages (from-to)47-58
Number of pages12
JournalJournal of Ocean Technology
Issue number1
Publication statusPublished - Jan 2012


  • Catamaran
  • Drag
  • Hull separation
  • Hull stagger
  • Interferences


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